Tantalum
Final Approach
- Joined
- Feb 22, 2017
- Messages
- 9,250
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Display name:
San_Diego_Pilot
From Flying https://www.flyingmag.com/ntsb-to-cirrus-address-fuel-boost-pump-issues-with-sr22t/
Emphasis mine
"
After investigating six takeoff accidents involving uncommanded loss of engine power in Cirrus SR22T, the National Transportation Safety Board is recommending the aircraft manufacturer conduct a Functional Hazard Assessment (FHA) to address the issue and mitigate the risk.
According to a report issued on April 12 by the NTSB, the six accidents were the result of excessive fuel flow in the SR22T, which caused engine failure during climb out. The accidents, which happened between 2017 and 2019, resulted in three deaths and nine persons injured.
During the accident investigations, the NTSB removed the recoverable data monitors from the accident aircraft and determined that in each case the aircraft indicated an excessively high fuel flow rate, ranging from 42.2 to 50.1 gallons per hour, just before the engine lost power.
...
The excessive fuel overloads the engine, similarly to the way chugging a beverage makes a person choke.
...
"
My issues
(1) for a publication by pilots, for pilots, saying that an over-rich situations is "overloading" the engine and comparing it to chugging a drink is absurd. Sad. This is CNN level aviation reporting.
(2) in my (not so) humble opinion this is really on the pilots.. during your takeoff run you should be watching the engine page and looking for abnormalities, aborting if they arise. If you get a fuel flow surge already in the air, there's a red knob, lean the engine appropriately. This comes back to training, I worry a lot of people go through things rote "takeoff = red knob all the way forward" without really thinking about or understanding what's happening
Turbo Cirri are known to be finnicky with fuel flow, and during initial climb, and climb to cruise, you have to monitor it closely
/end mini rant
Emphasis mine
"
After investigating six takeoff accidents involving uncommanded loss of engine power in Cirrus SR22T, the National Transportation Safety Board is recommending the aircraft manufacturer conduct a Functional Hazard Assessment (FHA) to address the issue and mitigate the risk.
According to a report issued on April 12 by the NTSB, the six accidents were the result of excessive fuel flow in the SR22T, which caused engine failure during climb out. The accidents, which happened between 2017 and 2019, resulted in three deaths and nine persons injured.
During the accident investigations, the NTSB removed the recoverable data monitors from the accident aircraft and determined that in each case the aircraft indicated an excessively high fuel flow rate, ranging from 42.2 to 50.1 gallons per hour, just before the engine lost power.
...
The excessive fuel overloads the engine, similarly to the way chugging a beverage makes a person choke.
...
"
My issues
(1) for a publication by pilots, for pilots, saying that an over-rich situations is "overloading" the engine and comparing it to chugging a drink is absurd. Sad. This is CNN level aviation reporting.
(2) in my (not so) humble opinion this is really on the pilots.. during your takeoff run you should be watching the engine page and looking for abnormalities, aborting if they arise. If you get a fuel flow surge already in the air, there's a red knob, lean the engine appropriately. This comes back to training, I worry a lot of people go through things rote "takeoff = red knob all the way forward" without really thinking about or understanding what's happening
Turbo Cirri are known to be finnicky with fuel flow, and during initial climb, and climb to cruise, you have to monitor it closely
/end mini rant
