Piper 601P N9774Q

Summary

On 6 November 1983 at about 23:50 local time, a Piper 601P registered N9774Q, operated by Paul M. Guyer, was involved in an accident near Helendale, California, United States. 6 people were on board and nobody was injured. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

6 November 1983 at 23:50

Classification

Accident

Location

Helendale, California, United States

Coordinates

36.4301, -119.6904

Aircraft

Piper 601P

Registration

N9774Q

Category

Airplane

Engines

2

Operator

Paul M. Guyer

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Las Vegas → Burbank

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

LAX84FA049

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

THE PILOT STATED THAT DURING CRUISE FLIGHT THE RIGHT ENGINE MANIFOLD PRESSURE FELL TO ZERO. THE ENGINE WAS FEATHERED AND SET UP FOR SINGLE ENGINE PERFORMANCE BUT THE ACFT CONTINUED TO DESCEND. SUITABLE AIRPORTS WERE FLOWN OVER DURING THE DESCENT AND THE ACFT FINALLY LANDED IN AN ALFALFA FIELD. EXAMIATION OF THE RIGHT ENGINE REVEALED SEVERE FIRE DAMAGE TO THE IGNITION WIRING HARNESS AND BOTH MAGNETO 'P' LEADS SHORTED. AN OIL VENT HOSE ROUTED ON THE OUTBOARD SIDE OF THE INBOARD TURBOCHARGER ALSO DISPLAYED SEVERE HEAT DAMAGE. THE OUTER LAYER OF A HEAT SHIELD ATTACHED TO THE TURBOCHARGER WAS FOUND TORN OPEN AND THE HEAT RESISTANT MATERIAL WAS PUSHED ASIDE OR MISSING FROM AN AREA APPROX ONE INCH SQUARE. THERIGHT ENGINE AND OVERHAULED TURBOCHARGERS HAD BEEN INSTALLED APPROX 9 HOURS PRIOR TO THE ACCIDENT ACCORDING TO THE HOBBS METER.

Quoted verbatim from the NTSB record.