Speedy wrote:
one of the Buchon's operated by the CAF didn't so much 'land gear up' as it more 'flew into the ground on a low pass' during the show.
(Airnutz memory alarm..Oooga! Ooooga!)
I thought N8575 failed to clear an irrigation berm off field, but the result was the same. The reason he ran out of altitude
was due to fuel starvation, probably why Lefty experienced "short hops"previously. Dunno who the pilot was, sorry.
I'm surprised Bdk didn't remember the thread..it was the 2nd time he was wrong that year(Merlin 500 Carbs had floats).
I remembered it because I got schooled on A/C engine fuel systems.
Warbirdnerd pulled this up about 5 years ago:
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Here is the NTSB report on the Buchon accident...
NTSB Identification: FTW88DRG04 .
The docket is stored on NTSB microfiche number 35613.
14 CFR Part 91: General Aviation
Accident occurred Saturday, December 19, 1987 in HARLINGEN, TX
Probable Cause Approval Date: 2/14/1989
Aircraft: MBB 109, registration: N8575
Injuries: 1 Fatal.
THE SET OF FLOATS WHICH ALLOWS A HIGH FUEL FLOW IN THIS CARBURETOR FOR HIGH POWER SETTINGS USED FOR TAKEOFF, CLIMB, ETC., HAD CRACKED AND SWOLLEN TO SUCH AN EXTENT THAT THEY WERE RUBBING AGAINST THE FLOAT CHAMBER WALLS AND FLOAT CHAMBER SHROUD TUBES. THIS INTERFERENCE PREVENTED ADEQUATE FUEL FLOW FOR HIGH POWER OPERATION OF THE ENGINE DURING THE TAKEOFF CLIMB WHICH TERMINATED IN THE ACCIDENT. THERE WERE NO ENTRIES IN THE MAINTENANCE LOGS WHICH INDICATED ANY MAINTENANCE OR INTERNAL EXAMINATION OF THE CARBURETOR SINCE THE AIRCRAFT WAS NEW (1959).
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
AIRSPEED(VS)..NOT MAINTAINED..PILOT IN COMMAND
FUEL SYSTEM,CARBURETOR FLOAT..DETERIORATED
FUEL SYSTEM,CARBURETOR FLOAT..MOVEMENT RESTRICTED
Index for Dec1987 | Index of months
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