ASN Wikibase Occurrence # 40334
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| Date: | Tuesday 23 April 1991 |
| Time: | 11:55 LT |
| Type: |  Piper J-5A Cub Cruiser |
| Owner/operator: | Phillip G. Cummings |
| Registration: | N35826 |
| MSN: | 5-797 |
| Engine model: | Lycoming O-235-C1 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Newbury, MA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WITNESSES SAID THAT AS SOON AS THE AIRPLANE BECAME AIRBORNE, IT STARTED A STEEPLY BANKED LEFT TURN AND DESCENDED INTO A TREE AND STRUCK THE GROUND. AN EXAMINATION OF THE FLIGHT CONTROL SYSTEM REVEALED A BROKEN RIGHT AILERON BRACKET AND A TEAR IN THE SHEET METAL AFT OF THIS BRACKET. A METALLURGICAL EXAMINATION REVEALED THAT THIS DAMAGE OCCURRED PRIOR TO THE ACCIDENT. THE AIRPLANE ANNUAL INSPECTION WAS OVERDUE BY ONE MONTH. THE PIPER SERVICE MANUAL AND BULLETINS RECOMMENDED REGULAR INSPECTION OF THIS BELLCRANK ASSEMBLY. TWO DAYS PRIOR TO THE ACCIDENT, A FRIEND OF THE PILOT'S AND A PRIVATE PILOT HIMSELF, SAW THE RIGHT AILERON OF N35826 FLAPPING UP AND DOWN DURING A WIND/RAIN STORM. THE LEFT AILERON WAS STREAMLINED. ED HATT, A RESTORER OF J5A'S, SAID IN HIS REPORT, 'IT IS MY OPINION...THAT THE NUT...'HUNG' ON THE TORN TAILING EDGE...JAMMING THE AILERON BELLCRANK AND CAUSING A LOSS OF AILERON CONTROL.'
Probable Cause: THE LOSS OF INFLIGHT CONTROL, WHICH WAS THE RESULT OF A JAMMED RIGHT AILERON BELLCRANK ASSEMBLY. FACTORS RELATED TO THE ACCIDENT WERE; THE IMPROPER MAINTENANCE OF THE FLIGHT CONTROL SYSTEM, AND THE INCOMPLETE PREFLIGHT BY THE PILOT.
Accident investigation:
 |
|
Sources:
NTSB NYC91FA120
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Apr-2024 06:55 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Source, Narrative, Accident report] |
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