ASN Wikibase Occurrence # 383320
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| Date: | Wednesday 15 September 1982 |
| Time: | 09:20 LT |
| Type: |  Piper PA-34-22OT |
| Owner/operator: | Montgomery Aviation Corp. |
| Registration: | N220HB |
| MSN: | 34-8133270 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 289 hours |
| Engine model: | Continental TSIO-360-KB |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Montgomery, AL -
 United States of America
|
| Phase: | Take off |
| Nature: | Executive |
| Departure airport: | Montgomery, AL |
| Montgomery, AL | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT STATED THAT A NORMAL RUNUP WAS COMPLETED BEFORE TAKEOFF. DURING THE TAKEOFF ROLL, THE AIRCRAFT ACCELE- RATED THROUGH 75 KNOTS WHEN A LOUD BANG WAS HEARD FROM THE LEFT SIDE. THE TAKEOFF WAS ABORTED AND A ROLLOUT ACCOMPLISHED. EXAMINATION OF THE LEFT ENGINE REVEALED THAT ONE OF THREE LEFT PROPELLER COUNTERWEIGHTS WERE MISSING. EACH COUNTERWEIGHT IS SECURED BY A SINGLE BOLT AND LOCKING NUT. EXAMINATION OF THE BOLT TUB REVEALED EVIDENCE OF PRE-LOAD STRESS. A SERVICE BULLETIN WAS ISSUED ON MARCH 03 1982, STATING THAT TO REDUCE PRE-LOAD STRESS ON THE COUNTERWEIGHT BOLT, THE TORQUE SPECIFICATION HAS BEEN REDUCED FROM 105-100 FOOT POUNDS TO 65-60 TORQUE POUNDS.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ATL82IA281
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Apr-2024 23:22 | ASN Update Bot | Added |
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