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Atlas / NTSB / NYC90LA035

NTSB CAROL · Event

Event NYC90LA035

1989-11-27 TINTON FALLS, New Jersey, United States None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

PRECAUTIONARY LANDING IN UNSUITABLE TERRAIN FOLLOWING A PARTIAL POWER LOSS DUE TO A FAILED EXHAUST VALVE.

Factual narrative

THE PILOT OF BEECH 23 WAS CRUISING AT 1000 FEET A.G.L. WHEN HE HEARD A TAPPING NOISE FROM THE ENGINE AND EXPERIENCED A PARTIAL POWER LOSS. HE ELECTED TO MAKE A PRECAUTIONARY LANDING IN A LAND FILL. THE NOSE AND RIGHT MAIN LANDING GEAR COLLAPSED IN THE SOFT TERRAIN. POST CRASH EXAMINATION OF THE ENGINE SHOWED A FAILED 7/16TH INCH EXHAUST VALVE IN THE #3 CYLINDER. AVAILABLE RECORDS INDICATED THE ENGINE HAD 2010 HOURS AND THE MANUFACTURER RECOMMENDS OVERHAUL AT 1200 HOURS WITH THE 7/16TH INCH EXHAUST VALVE. NO RECORDS WERE AVAILABLE TO INDICATE IF THE ENGINE HAD BEEN OVERHAULED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1989_NYC90LA035.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.