ASN Wikibase Occurrence # 41315
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| Date: | Sunday 21 August 1983 |
| Time: | 14:10 |
| Type: |  Champion 7GCAA |
| Owner/operator: | private |
| Registration: | N100ES |
| MSN: | 229-70 |
| Total airframe hrs: | 3421 hours |
| Engine model: | LYCOMING O-320-A2B |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | La Jolla, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Banner and glider towing |
| Departure airport: | El Cajon, CA (SEE) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
PRIOR TO DEPARTURE, THE ACFT WAS OBSERVED BEING RUN UP WITH THE ENG SPUTTERING & BACKFIRING QUITE BADLY. THE ACFT RETURNED TO THE HANGER & 3 LOWER PLUGS WERE CHANGED. THE FLT WAS THEN RESUMED. THE ACFT WAS NEXT OBSERVED OFF SHORE, WITH THE ENG SPUTTERING & MISSING, & THE BANNER HAVING BEEN RELEASED. THE ACFT THEN PITCHED UP, STALLED & STRUCK THE WATER. ENG EXAMINATION REVEALED NUMEROUS MECHANICAL DISCREPANCIES. THE #4 EXHAUST VALVE FAILED IN FATIGUE. THE RIGHT EXHAUST FLAME TUBE WAS DETERIORATED & SEPARATED WITH PARTS MISSING WHICH WERE LARGER THAN THE OPENING IN THE EXHAUST MANIFOLD. 4/5 OF THE #2 PISTON CAP SKIRT WAS MISSING. THE #2 SCRAPER RING ON THE #2 PISTON WAS BROKEN IN HALF. THE #4 EXHAUST CAM LOBE WAS WORN TO ABOUT 1/2 ITS NORMAL HEIGHT. THE #4 EXHAUST CAM FOLLOWER FACE WAS CONCAVED & PITTED. THE OIL PUMP HOUSING & GEARS SHOWED SCRATCH MARKS SUGGESTIVE OF METAL CONTANINATION. CAUSE:
Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001214X44197
History of this aircraft
Other occurrences involving this aircraft
| 13 August 1994 | N7565F | Mid-plains Aviation | 2 | Humphrey, NE | |
w/o |
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] |
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