Robinson R-22 N8029Z

Summary

On 15 June 1994 at about 16:45 local time, a Robinson R-22 registered N8029Z, operated by B & A Leasing Corporation, was involved in an accident near Raynham, Massachusetts, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

15 June 1994 at 16:45

Classification

Accident

Location

Raynham, Massachusetts, United States

Coordinates

Not recorded

Aircraft

Robinson R-22

Registration

N8029Z

Category

Helicopter

Engines

1

Operator

B & A Leasing Corporation

Operating rule

Part 91: General Aviation

Purpose of flight

Business

Phase of flight

Not recorded

Route

Sterling → Plymouth

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

BFO94LA100

Nobody was injured.

Failure of the number four cylinder piston rings.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

WHILE IN CRUISE FLIGHT AT 500 FEET ABOVE THE GROUND, THE ENGINE HAD A PARTIAL LOSS OF POWER. THE PILOT STATED THAT HE NOTICED A RAPID RISE IN THE OIL TEMPERATURE, CYLINDER HEAD TEMPERATURE, AND MANIFOLD PRESSURE. HE STATED THE RPM'S BEGAN TO DECREASE SO HE INITIATED AN EMERGENCY DESCENT TO LAND. HE STATED ABOUT 100 FEET ABOVE THE GROUND, TOTAL POWER LOSS OCCURRED AND HE DID AN AUTOROTATION LANDING. THE PILOT STATED THAT DUE TO IRREGULAR TERRAIN AT THE LANDING SITE, THE MAIN ROTOR BLADES FLEXED DOWN AND CONTACTED THE TAIL BOOM. THE EXAMINATION OF THE ENGINE REVEALED THAT THERE WERE METAL SHAVINGS THROUGHOUT THE ENGINE AND THE NUMBER FOUR PISTON RINGS WERE BROKEN.

Quoted verbatim from the NTSB record.