AOPA Turbine Pilot Magazine - September 2024 - 98
The TBM 940 (left) is required to do annual inspections, but the King Air C90 (right) isn't. Go figure!
portion of the aircraft to go more than a
year without being inspected. Since the four
inspections are to be performed at 50-hour
intervals, a progressive inspection program
generally does not make sense for an aircraft
that flies fewer than 200 hours per year. It
can be a useful alternative for flight schools
and freight haulers, but not for most ownerflown
aircraft.
In contrast, owners of " big boy "
aircraft like King Airs and Citations
are not required to do annual or 100hour
inspections. Instead, they are
permitted to choose from a variety of
inspection options. One option is to use
the inspection program recommended by
the aircraft manufacturer, and this is the
option that most " big boy " owners choose.
However, owners may also develop their
own custom inspection program and ask
the local FSDO to approve it. Typically,
such " approved aircraft
inspection
programs " (AAIPs) are based on the
manufacturer's recommended inspection
program with certain modifications. But
any inspection program that the FSDO is
willing to approve may be used.
The manufacturer's recommended
inspection program for " big boy " aircraft
is almost always a phased inspection
program, but unlike progressive
inspections there's no FAA requirement
for all the phases to be completed in one
98
AOPA PILOT / September 2024
year. Let's take a look at one such program,
the one for the ubiquitous King Air.
King Air inspection programs
There are actually three manufacturerrecommended
inspection programs for
King Airs, each consisting of four phased
inspections. The choice of which program
applies depends on how many hours the
airplane is flown per year.
The " standard program " is for aircraft
that fly at least 400 hours per year. It
involves performing one phased inspection
approximately every 200 hours. The
maintenance cycle is complete when the
phase 4 inspection has been completed.
The phase 1 inspection is then due 180 to
210 hours later. All four phases must be
completed within 24 months.
For aircraft that fly fewer than 400
hours per year, the " alternate program "
involves doing both phase 1 and 2
inspections after 200 hours or 12 months,
and doing phase 3 and 4 inspections after
the next 200 hours or 12 months. Finally,
for aircraft that fly fewer than 200 hours
per year, there's a " biennial program " that
involves an abbreviated interim inspection
(basically an operational check) after 12
months and then doing all four phased
inspections at 24 months.
These three alternative inspection programs
give owners considerable flexibility,
and all are based on the concept of completing
all four phases every two years. If that's
not sufficiently flexible, owners have the
opportunity to modify the program and ask
their FSDO to approve it as an AAIP.
What about the rest of us?
Frankly, it has always baffled me why the
FAA-in its infinite wisdom-approves
this kind of two-year phased inspection
program for King Airs but requires a
complete inspection every single year for a
Pilatus PC-12 or Daher TBM 940 or Cessna
421 or Mooney 252. Not only does this seem
to make no sense, but it seems contrary to
one of the FAA's most fundamental guiding
principles, the " safety continuum doctrine. "
Mandated by Congress, the safety
continuum doctrine recognizes that
different types of aircraft and operations
require different levels of safety. Under this
doctrine, aircraft that carry more people,
that weigh more, and that fly faster need
to be held to a higher level of safety than
ones that are smaller, lighter, and slower.
Public carriers need to be safer than
private carriers. Based on this doctrine,
experimental amateur-built, light sport,
certificated GA and transport aircraft are
held to a progressively higher level of safety.
This makes perfect sense, doesn't it?
So how does it make sense
that a Cessna 150 requires a
AOPA Turbine Pilot Magazine - September 2024
Table of Contents for the Digital Edition of AOPA Turbine Pilot Magazine - September 2024
Contents
AOPA Turbine Pilot Magazine - September 2024 - Intro
AOPA Turbine Pilot Magazine - September 2024 - Cover1
AOPA Turbine Pilot Magazine - September 2024 - Cover2
AOPA Turbine Pilot Magazine - September 2024 - Contents
AOPA Turbine Pilot Magazine - September 2024 - 2
AOPA Turbine Pilot Magazine - September 2024 - 3
AOPA Turbine Pilot Magazine - September 2024 - 4
AOPA Turbine Pilot Magazine - September 2024 - 5
AOPA Turbine Pilot Magazine - September 2024 - 6
AOPA Turbine Pilot Magazine - September 2024 - 7
AOPA Turbine Pilot Magazine - September 2024 - 8
AOPA Turbine Pilot Magazine - September 2024 - 9
AOPA Turbine Pilot Magazine - September 2024 - 10
AOPA Turbine Pilot Magazine - September 2024 - 11
AOPA Turbine Pilot Magazine - September 2024 - 12
AOPA Turbine Pilot Magazine - September 2024 - 13
AOPA Turbine Pilot Magazine - September 2024 - 14
AOPA Turbine Pilot Magazine - September 2024 - 15
AOPA Turbine Pilot Magazine - September 2024 - 16
AOPA Turbine Pilot Magazine - September 2024 - 17
AOPA Turbine Pilot Magazine - September 2024 - 18
AOPA Turbine Pilot Magazine - September 2024 - 19
AOPA Turbine Pilot Magazine - September 2024 - 20
AOPA Turbine Pilot Magazine - September 2024 - 21
AOPA Turbine Pilot Magazine - September 2024 - 22
AOPA Turbine Pilot Magazine - September 2024 - 23
AOPA Turbine Pilot Magazine - September 2024 - 24
AOPA Turbine Pilot Magazine - September 2024 - 25
AOPA Turbine Pilot Magazine - September 2024 - 26
AOPA Turbine Pilot Magazine - September 2024 - 27
AOPA Turbine Pilot Magazine - September 2024 - 28
AOPA Turbine Pilot Magazine - September 2024 - 29
AOPA Turbine Pilot Magazine - September 2024 - 30
AOPA Turbine Pilot Magazine - September 2024 - 31
AOPA Turbine Pilot Magazine - September 2024 - 32
AOPA Turbine Pilot Magazine - September 2024 - 33
AOPA Turbine Pilot Magazine - September 2024 - 34
AOPA Turbine Pilot Magazine - September 2024 - 35
AOPA Turbine Pilot Magazine - September 2024 - 36
AOPA Turbine Pilot Magazine - September 2024 - 37
AOPA Turbine Pilot Magazine - September 2024 - 38
AOPA Turbine Pilot Magazine - September 2024 - 39
AOPA Turbine Pilot Magazine - September 2024 - 40
AOPA Turbine Pilot Magazine - September 2024 - 41
AOPA Turbine Pilot Magazine - September 2024 - 42
AOPA Turbine Pilot Magazine - September 2024 - 43
AOPA Turbine Pilot Magazine - September 2024 - 44
AOPA Turbine Pilot Magazine - September 2024 - 45
AOPA Turbine Pilot Magazine - September 2024 - 46
AOPA Turbine Pilot Magazine - September 2024 - 47
AOPA Turbine Pilot Magazine - September 2024 - 48
AOPA Turbine Pilot Magazine - September 2024 - T-1
AOPA Turbine Pilot Magazine - September 2024 - T-2
AOPA Turbine Pilot Magazine - September 2024 - T-3
AOPA Turbine Pilot Magazine - September 2024 - T-4
AOPA Turbine Pilot Magazine - September 2024 - T-5
AOPA Turbine Pilot Magazine - September 2024 - T-6
AOPA Turbine Pilot Magazine - September 2024 - T-7
AOPA Turbine Pilot Magazine - September 2024 - T-8
AOPA Turbine Pilot Magazine - September 2024 - T-9
AOPA Turbine Pilot Magazine - September 2024 - T-10
AOPA Turbine Pilot Magazine - September 2024 - T-11
AOPA Turbine Pilot Magazine - September 2024 - T-12
AOPA Turbine Pilot Magazine - September 2024 - T-13
AOPA Turbine Pilot Magazine - September 2024 - T-14
AOPA Turbine Pilot Magazine - September 2024 - T-15
AOPA Turbine Pilot Magazine - September 2024 - T-16
AOPA Turbine Pilot Magazine - September 2024 - 49
AOPA Turbine Pilot Magazine - September 2024 - 50
AOPA Turbine Pilot Magazine - September 2024 - 51
AOPA Turbine Pilot Magazine - September 2024 - 52
AOPA Turbine Pilot Magazine - September 2024 - 53
AOPA Turbine Pilot Magazine - September 2024 - 54
AOPA Turbine Pilot Magazine - September 2024 - 55
AOPA Turbine Pilot Magazine - September 2024 - 56
AOPA Turbine Pilot Magazine - September 2024 - 57
AOPA Turbine Pilot Magazine - September 2024 - 58
AOPA Turbine Pilot Magazine - September 2024 - 59
AOPA Turbine Pilot Magazine - September 2024 - 60
AOPA Turbine Pilot Magazine - September 2024 - 61
AOPA Turbine Pilot Magazine - September 2024 - 62
AOPA Turbine Pilot Magazine - September 2024 - 63
AOPA Turbine Pilot Magazine - September 2024 - 64
AOPA Turbine Pilot Magazine - September 2024 - 65
AOPA Turbine Pilot Magazine - September 2024 - 66
AOPA Turbine Pilot Magazine - September 2024 - 67
AOPA Turbine Pilot Magazine - September 2024 - 68
AOPA Turbine Pilot Magazine - September 2024 - 69
AOPA Turbine Pilot Magazine - September 2024 - 70
AOPA Turbine Pilot Magazine - September 2024 - 71
AOPA Turbine Pilot Magazine - September 2024 - 72
AOPA Turbine Pilot Magazine - September 2024 - 73
AOPA Turbine Pilot Magazine - September 2024 - 74
AOPA Turbine Pilot Magazine - September 2024 - 75
AOPA Turbine Pilot Magazine - September 2024 - 76
AOPA Turbine Pilot Magazine - September 2024 - 77
AOPA Turbine Pilot Magazine - September 2024 - 78
AOPA Turbine Pilot Magazine - September 2024 - 79
AOPA Turbine Pilot Magazine - September 2024 - 80
AOPA Turbine Pilot Magazine - September 2024 - 81
AOPA Turbine Pilot Magazine - September 2024 - 82
AOPA Turbine Pilot Magazine - September 2024 - 83
AOPA Turbine Pilot Magazine - September 2024 - 84
AOPA Turbine Pilot Magazine - September 2024 - 85
AOPA Turbine Pilot Magazine - September 2024 - 86
AOPA Turbine Pilot Magazine - September 2024 - 87
AOPA Turbine Pilot Magazine - September 2024 - 88
AOPA Turbine Pilot Magazine - September 2024 - 89
AOPA Turbine Pilot Magazine - September 2024 - 90
AOPA Turbine Pilot Magazine - September 2024 - 91
AOPA Turbine Pilot Magazine - September 2024 - 92
AOPA Turbine Pilot Magazine - September 2024 - 93
AOPA Turbine Pilot Magazine - September 2024 - 94
AOPA Turbine Pilot Magazine - September 2024 - 95
AOPA Turbine Pilot Magazine - September 2024 - 96
AOPA Turbine Pilot Magazine - September 2024 - 97
AOPA Turbine Pilot Magazine - September 2024 - 98
AOPA Turbine Pilot Magazine - September 2024 - 99
AOPA Turbine Pilot Magazine - September 2024 - 100
AOPA Turbine Pilot Magazine - September 2024 - 101
AOPA Turbine Pilot Magazine - September 2024 - 102
AOPA Turbine Pilot Magazine - September 2024 - 103
AOPA Turbine Pilot Magazine - September 2024 - 104
AOPA Turbine Pilot Magazine - September 2024 - 105
AOPA Turbine Pilot Magazine - September 2024 - 106
AOPA Turbine Pilot Magazine - September 2024 - 107
AOPA Turbine Pilot Magazine - September 2024 - 108
AOPA Turbine Pilot Magazine - September 2024 - 109
AOPA Turbine Pilot Magazine - September 2024 - 110
AOPA Turbine Pilot Magazine - September 2024 - 111
AOPA Turbine Pilot Magazine - September 2024 - 112
AOPA Turbine Pilot Magazine - September 2024 - Cover3
AOPA Turbine Pilot Magazine - September 2024 - Cover4
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202409
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202408
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202407
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202406
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202405
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202404
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202403
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202402
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202401
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202312
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202311
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202310
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202309
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202308
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202307
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202306
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202305
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202304
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202303
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202302
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202301
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202212
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202211
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202210
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202209
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202208
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202207
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202206
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202205
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202204
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202203
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202202
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202201
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202112
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202111
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202110
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202109
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202108
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202107
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202106
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202105
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202104
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202103
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202102
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202101
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202012
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202011
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202010
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202009
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202008
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202007
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202006
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202005
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202004
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202003
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202002
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_202001
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201912
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201911
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201910
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201909
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201908
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201907
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201906
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201905
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201904
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201903
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201902
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201901
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201812
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201811
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201810
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201809
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201808
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201807
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201806
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201805
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201804
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201803
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201802
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201801
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201712
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201711
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201710
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201709
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201708
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201707
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201706
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201705
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201704
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201703
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201702
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201701
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201612
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201611
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201610
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201609
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201608
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201607
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201606
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201605
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201604
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201603
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201602
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201601
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201512
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201511
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201510
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201509
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201508
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201507
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201506
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201505
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201504
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201503
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201502
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201501
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201412
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201411
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201410
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201409
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201408
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201407
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201406
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201405
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201404
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201403
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201402
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201401
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201312
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201311
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201310
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201309
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201308
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201307
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201306
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201305
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201304
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201303
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201302
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201301
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201212
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201211
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201210
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201209
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201208
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201207
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201206
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201205
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201204
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201203
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201202
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201201
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201112
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201111
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201110
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201109
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201108
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201107
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201106
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201105
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201104
https://www.nxtbook.com/nxtbooks/aopa/turbinepilot_201103
https://www.nxtbookmedia.com