Kiesel MIDGET MUSTANG N68WK

Summary

On 5 July 1987 at about 15:30 local time, a Kiesel MIDGET MUSTANG registered N68WK was involved in an accident near Window Rock, Arizona, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

5 July 1987 at 15:30

Classification

Accident

Location

Window Rock, Arizona, United States

Nearest airport

Window Rock (P34)

Coordinates

35.6897, -108.9800

Aircraft

Kiesel MIDGET MUSTANG

Registration

N68WK

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

LAX87DUJ07

1 person had minor injuries.

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 AIRCRAFT LOST POWER SHORTLY AFTER TAKEOFF AND COLLIDED WITH A DIRT BANK DURING THE SUBSEQUENT FORCED LANDING. ENGINEEXAMINATION REVEALED AN OPEN INTAKE VALVE ON THE NUMBER 4 CYLINDER AND THE PILOT STATED A 'BENT AND CRACKED CRANKSHAFT FROM A PRIOR ACCIDENT' WAS DISCOVERED DURING THE ENGINE EXAMINATION. THE ENGINE MANUFACTURER STATED THAT AN OPEN INTAKE VALVE COULD INDUCE SIGNIFICANT POWER LOSS BY ALLOWING EXHAUST GASSES TO PRESSURIZE THE INTAKE MANIFOLD, THEREBY ALTERINGTHE FUEL/AIR MIXTURE. THE MAINTENANCE RECORDS ESTABLISHED THAT THE AIRCRAFT HAD FLOWN ONLY NINE HOURS SINCE THE LAST CONDITION INSPECTION.

Quoted verbatim from the NTSB record.