ASN Wikibase Occurrence # 373231
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| Date: | Friday 17 April 1987 |
| Time: | 14:45 LT |
| Type: |  Ted Smith Aerostar 601P |
| Owner/operator: | Sierra Telephone Co., Inc. |
| Registration: | N90518 |
| MSN: | 61P-0315-085 |
| Total airframe hrs: | 1731 hours |
| Engine model: | LYCOMING L/TIO-540 |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Las Vegas, NV -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Las Vegas, NV (KLAS) |
| Fresno, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
APRX 422 FLT HRS BFR THE FLT, THE SMITH AEROSTAR 601P WAS MODIFIED IAW MACHEN STC SA980NW. DRG LEVEL OFF AT 16,500' MSL,BLISTERING & DISCOLORATION WERE NOTED ON THE #1 ENG NACELLE. THE PLT SHUT DOWN & FEATHERED THE #1 ENG, THEN RETURNED TO THE DEPARTURE ARPT & LANDED WITHOUT FURTHER INCIDENT. AFTER LNDG, AN EXAM REVEALED AN IN-FLT FIRE HAD OCCURRED, WHICH RESULTED IN MINOR DMG OF THE ENG ACCESSORY SECTION. TWO EXHAUST CLAMPS WERE FOUND LOOSE AT THE EXHAUST STACK WASTE GATE CONNECTION. HOT GASES FROM THE LOOSE CONNECTION HAD ESCAPED & IMPINGED ON THE TURBOCHARGER OIL SUPPLY HOSE (MACHEN PN CAA04S160). THE HOSE WAS WIRE REINFORCED & FIRE SLEEVED, BUT WAS LOCATED CLOSE TO THE EXHAUST STACK. THERE WAS EVIDENCE THAT IT HAD RUPTURED FROM PROLONGED EXPOSURE TO HEAT. ESCAPING OIL FROM THE HOSE CAME IN CONTACT WITH THE HOT EXHAUST STACK & TURBOCHARGER, WHICH RESULTED IN A FIRE.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB SEA87IA084
History of this aircraft
Other occurrences involving this aircraft
| 23 July 1999 | N345LS | Mark H. Johnson | 2 | Bethany, OK | |
w/o |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Mar-2024 10:55 | ASN Update Bot | Added |
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