This is episode 42, and we’re diving into a particular category of aviation accidents — those that happen right at the beginning of a pilot’s journey. We’re talking about ab initio training mishaps.
Ab initio, Latin for “from the beginning,” refers to a training path designed for aspiring pilots who start with zero flight time. Nothing. Not a minute logged, not a system diagram understood. These courses take students from ground zero to the right-hand seat of a commercial flight deck — through a tightly structured mix of theory, simulator time, and real-world flying.
They’re intense and sometimes quite fast. And they aim to do two things: produce skilled, airline-ready pilots and identify those who should probably find another career.
Many of these programmes are tied directly to airlines, which means you’re taught from the outset to fly their way — their SOPs, their ethos, their cockpit culture. That brings clear advantages. The pathway is laid out: from the classroom to the cockpit, without the detours of fragmented, school-hopping training. For many, there’s financial backing too — covering tuition, even living costs — opening doors for those who’d otherwise never afford to fly.
There’s also the camaraderie. Like a military intake, you form close bonds under pressure, guided by seasoned instructors and surrounded by peers. And at the end, a job may be waiting — conditional on success.
But it’s not all lift and no drag.
Freedom? Limited. You’re often bonded to the airline for years — and leaving early can come with steep penalties. Career flexibility? Not much. Your training is airline-specific, and if you decide to fly charter or head bush, you may be back at square one.
Contrary to the doomsaying of many veteran aviators, the accident rate during ab initio flight training in the United States has fallen by close to 50% — measured per flight hour - it shows between 2000 and 2019, the number of fatal training accidents almost halved. The Aircraft Owners and Pilots Association’s Air Safety Institute has the data to back it up.
In the early 2000s, the accident rate hovered around 0.49 per 100,000 flying hours. By 2009, that fell to 0.39. By 2019, the rate dipped to 0.26 per 100,000 hours — a substantial decline.
The top three causes of fatal training accidents haven’t changed much over time. They are, in order:
1. Loss of control in flight
2. Midair collisions
3. Controlled Flight Into Terrain — CFIT — the old nemesis flight into the granite cloud.
All content for Plane Crash Diaries is the property of Desmond Latham and is served directly from their servers
with no modification, redirects, or rehosting. The podcast is not affiliated with or endorsed by Podjoint in any way.
This is episode 42, and we’re diving into a particular category of aviation accidents — those that happen right at the beginning of a pilot’s journey. We’re talking about ab initio training mishaps.
Ab initio, Latin for “from the beginning,” refers to a training path designed for aspiring pilots who start with zero flight time. Nothing. Not a minute logged, not a system diagram understood. These courses take students from ground zero to the right-hand seat of a commercial flight deck — through a tightly structured mix of theory, simulator time, and real-world flying.
They’re intense and sometimes quite fast. And they aim to do two things: produce skilled, airline-ready pilots and identify those who should probably find another career.
Many of these programmes are tied directly to airlines, which means you’re taught from the outset to fly their way — their SOPs, their ethos, their cockpit culture. That brings clear advantages. The pathway is laid out: from the classroom to the cockpit, without the detours of fragmented, school-hopping training. For many, there’s financial backing too — covering tuition, even living costs — opening doors for those who’d otherwise never afford to fly.
There’s also the camaraderie. Like a military intake, you form close bonds under pressure, guided by seasoned instructors and surrounded by peers. And at the end, a job may be waiting — conditional on success.
But it’s not all lift and no drag.
Freedom? Limited. You’re often bonded to the airline for years — and leaving early can come with steep penalties. Career flexibility? Not much. Your training is airline-specific, and if you decide to fly charter or head bush, you may be back at square one.
Contrary to the doomsaying of many veteran aviators, the accident rate during ab initio flight training in the United States has fallen by close to 50% — measured per flight hour - it shows between 2000 and 2019, the number of fatal training accidents almost halved. The Aircraft Owners and Pilots Association’s Air Safety Institute has the data to back it up.
In the early 2000s, the accident rate hovered around 0.49 per 100,000 flying hours. By 2009, that fell to 0.39. By 2019, the rate dipped to 0.26 per 100,000 hours — a substantial decline.
The top three causes of fatal training accidents haven’t changed much over time. They are, in order:
1. Loss of control in flight
2. Midair collisions
3. Controlled Flight Into Terrain — CFIT — the old nemesis flight into the granite cloud.
Episode 32 – Payne Stewart’s Learjet decompression death and missing maintenance logs
Plane Crash Diaries
35 minutes 8 seconds
2 years ago
Episode 32 – Payne Stewart’s Learjet decompression death and missing maintenance logs
A listener asked me to take a closer look at the crash of a Lear jet in 1999 that was carrying golfer Payne Stewart so here we are.
Of all the crashes we’ve looked at this has to be one of the more frustrating and needs quite a bit of sleuthing. The main reason is the NTSB still has not published a final report and probably never will.
The basic facts are not in dispute – it was a case of a plane decompression at high altitude. But how it happened is another matter.
So let’s try and dig deep and discover what led to the death of one of the best known sportsmen in the United States.
The basic story goes like this.
On October 25, 1999 a Learjet 35 registration N47BA, operated by Sunjet Aviation based in Sanford, Florida departed Orlando, Florida, for Dallas, Texas, at around 0920 eastern daylight time (EDT). Radio contact with the flight was lost north of Gainesville, after air traffic control (ATC) cleared the airplane to flight level (FL) 390.
The learjet was then intercepted by several U.S. Air Force and Air National Guard aircraft as it headed in a north west direction. The military pilots flew close enough to see that the windshields of the Learjet were frosted or covered with condensation.
Later the airplane engines began spooling down, controlled flight was not possible, and the learjet stalled and spiralled to the ground, impacting an open field between the towns of Mila and Aberdeen in South Dakota just before 12h15 central daylight time on October 25th 1999.
The NTSB scrutinised the maintenance logs and found a snag reported in February 1998 that the cabin occasionally would not hold pressure at low altitudes. Maintenance checked this on the ground but could not replicate the problem, so it wasn’t fixed.
IN May 1999 Sunjet maintenance personnel were checked out as part of the Phase A1-6 inspection, which included pressurization system checks. All seemed fine once more.
But it wasn’t.
A Sunjet Aviation pilot reported to Safety Board investigators that a month later, July 22, 1999 during a flight in the very same Learjet, the pressurization system would not maintain a full pressure differential and that later the cabin altitude “started climbing well past 2,000 feet per minute” he said.
When confronted by the NTSB, the Sunjet Aviation Chief pilot denied this, saying that he hadn’t noticed any differential.
However, a July 23, 1999, Work Order discrepancy sheet 5895 noted the following: “Discrepancy: Pressurization check and operation of system.”
Plane Crash Diaries
This is episode 42, and we’re diving into a particular category of aviation accidents — those that happen right at the beginning of a pilot’s journey. We’re talking about ab initio training mishaps.
Ab initio, Latin for “from the beginning,” refers to a training path designed for aspiring pilots who start with zero flight time. Nothing. Not a minute logged, not a system diagram understood. These courses take students from ground zero to the right-hand seat of a commercial flight deck — through a tightly structured mix of theory, simulator time, and real-world flying.
They’re intense and sometimes quite fast. And they aim to do two things: produce skilled, airline-ready pilots and identify those who should probably find another career.
Many of these programmes are tied directly to airlines, which means you’re taught from the outset to fly their way — their SOPs, their ethos, their cockpit culture. That brings clear advantages. The pathway is laid out: from the classroom to the cockpit, without the detours of fragmented, school-hopping training. For many, there’s financial backing too — covering tuition, even living costs — opening doors for those who’d otherwise never afford to fly.
There’s also the camaraderie. Like a military intake, you form close bonds under pressure, guided by seasoned instructors and surrounded by peers. And at the end, a job may be waiting — conditional on success.
But it’s not all lift and no drag.
Freedom? Limited. You’re often bonded to the airline for years — and leaving early can come with steep penalties. Career flexibility? Not much. Your training is airline-specific, and if you decide to fly charter or head bush, you may be back at square one.
Contrary to the doomsaying of many veteran aviators, the accident rate during ab initio flight training in the United States has fallen by close to 50% — measured per flight hour - it shows between 2000 and 2019, the number of fatal training accidents almost halved. The Aircraft Owners and Pilots Association’s Air Safety Institute has the data to back it up.
In the early 2000s, the accident rate hovered around 0.49 per 100,000 flying hours. By 2009, that fell to 0.39. By 2019, the rate dipped to 0.26 per 100,000 hours — a substantial decline.
The top three causes of fatal training accidents haven’t changed much over time. They are, in order:
1. Loss of control in flight
2. Midair collisions
3. Controlled Flight Into Terrain — CFIT — the old nemesis flight into the granite cloud.
