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NYC90FA199

1990-08-24 · MATTAPAN, Massachusetts, United States · Fatal · 1 aircraft · Status: Completed

Airport BOS

N85HB has since been reassigned. It is now registered to a different aircraft (MARKOWITZ DAVID B JUST FUN CAT, built 2022), which was not involved in this event.

Aircraft involved

Probable cause & findings

THE PILOT'S IMPROPER IN-FLIGHT PLANNING/DECISION, WHICH RESULTED IN HIS FAILURE TO MAINTAIN CONTROL OF THE AIRCRAFT. FACTORS RELATED TO THE ACCIDENT WERE: FAILURE OF THE LEFT FUEL CONTROL UNIT, AND THE ADVERSE WEATHER CONDITIONS.

Factual narrative

THE PLT NOTED AN OVER TORQUE CONDITION IN THE LEFT ENG AS THE ACFT WAS ON AN ILS APCH. HE MADE A GO-AROUND & INITIATED ANOTHER APCH WITH THE ENG SHUT DOWN. HE WAS UNABLE TO MAINTAIN ALT & THE ACFT BEGAN A DECENT THAT WAS NOT ARRESTED. SUBSEQUENTLY, IT CRASHED INTO 2 HOMES, APRX 6 MI FROM THE ARPT. AN EXAM OF THE LEFT ENG REVEALED THE DRIVE SHAFT FROM THE FUEL PUMP TO THE FUEL CONTROL WAS SHEARED AT THE PLASTIC COUPLING. FURTHER EXAM REVEALED THE TWIN BEARINGS THAT SUPPORTED THE DRIVESHAFT HAD FAILED. ALSO, THERE WAS EVIDENCE THE DRIVE SHAFT HAD SHIFTED & SUBSEQUENTLY AN OVERTORQUE CONDITION RESULTED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_NYC90FA199.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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