ASN Wikibase Occurrence # 359899
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| Date: | Saturday 27 August 1994 |
| Time: | 10:01 LT |
| Type: | Bede BD-10 |
| Owner/operator: | Bede Jet Corporation |
| Registration: | N2BD |
| MSN: | 0001 |
| Total airframe hrs: | 300 hours |
| Engine model: | GE J-85-J4 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Chesterfield, MO -
 United States of America
|
| Phase: | Take off |
| Nature: | Executive |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE EXPERIMENTAL SINGLE ENGINE TURBOJET WAS DEPARTING ON A DEMONSTRATION FLIGHT. AFTER ATTAINING ROTATION SPEED (VR), THE CANOPY BEGAN TO OPEN. THE PILOT INTENTIONALLY ABORTED THE TAKEOFF, APPLIED HEAVY BRAKING, AND THE AIRPLANE DEPARTED THE RUNWAY END. THE RUNWAY USED WAS 3800 FEET LONG. A PARALLEL RUNWAY WAS 7000 FEET LONG. THE PILOTS' CALCULATION SHOWED REQUIRED RUNWAY TO BE 3110 FEET. THE CANOPY LOCK PINS WERE FULLY EXTENDED, EXTINGUISHING THE 'CANOPY OPEN' LIGHT, BUT HAD NOT ENGAGED THE LOCKING LUGS. A SUBSEQUENT REDESIGN LENGTHENED THE LUGS, WHICH PREVENTS THE LOCK PINS FROM EXTENDING WITHOUT ENGAGEMENT. THE LIMITED PERFORMANCE DATA AVAILABLE DOES NOT INCLUDE ACCELERATE- STOP DISTANCE, NOR IS IT AVAILABLE FOR ABORT ABOVE VR.
Probable Cause: the canopy lock pin design which allowed the pilot to receive a 'closed and locked' indication without the canopy lock pin being engaged. Factors were the pilots' intentional abort above rotation speed, the lack of developed takeoff and accelerate-stop distance performance data for the airplane in this flight regime.
Accident investigation:
 |
|
Sources:
NTSB CHI94LA288
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 15:47 | ASN Update Bot | Added |
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