DEN86LA236
1986-08-24 · HELENA, Montana, United States · Serious · 1 aircraft · Status: Completed
Airport HLN
Aircraft involved
Factual narrative
THE ACFT WAS ON FINAL APCH AFTER COMPLETING A X-COUNTRY FROM BILLINGS, MT, WHEN THE ACCIDENT OCCURRED. THE PLT STATED THE ACFT WAS LOW AFTER INTERCEPTING THE VASI SO POWER WAS ADDED; HOWEVER, THE ENG DID NOT RESPOND. THE ACFT STRUCK A SMALL HILL 300 FT SHORT OF RWY. INSPECTION FOUND NO EVIDENCE OF MECHANICAL FAILURE OF THE ENGINE BUT THE UPPER CABLE FROM THROTTLE CONTROL-TO-CARBURETOR LINKAGE WAS BENT AND THE WALKING BEAM SHOWED EVIDENCE OF BINDING. ADDITIONALLY, NO EVIDENCE OF CABLE LUBRICATION WAS NOTED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1986_DEN86LA236.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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