NTSB Identification: SEA87IA084.
The docket is stored on NTSB microfiche number 33742.
Incident occurred Friday, April 17, 1987 in LAS VEGAS, NV
Aircraft: Smith, Ted Aerostar AEROSTAR 601P, registration: N90518
Injuries: 5 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

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.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

EXHAUST SYSTEM,CLAMP..LOOSE

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

ENGINE ASSEMBLY,OTHER..FIRE

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

EXHAUST SYSTEM..LEAK

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

LUBRICATING SYSTEM,OIL LINE..OVERTEMPERATURE

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

MAINTENANCE,MODIFICATION..INADEQUATE

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

LUBRICATING SYSTEM,OIL LINE..FAILURE,PARTIAL

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

FLUID,OIL..LEAK





Contributing Factors

CONDITION(S)/STEP(S) INSUFFICIENTLY DEFINED..PRODUCTION/DESIGN PERSONNEL

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