MKC86LA158
1986-07-27 · AUDUBON, Iowa, United States · None · 1 aircraft · Status: Completed
Airport ADU
N9835U has since been reassigned. It is now registered to a different aircraft (UVIFY 810-00028), which was not involved in this event.
Aircraft involved
Factual narrative
THE PILOT STATED THAT THE ENGINE WAS DEVELOPING FULL POWER DURING THE BRAKE RELEASE AND TAKEOFF ROLL BUT THAT THE AIRCRAFT WOULD NOT ACCELERATE TO LIFT-OFF SPEED AS FAST AS EXPECTED. UPON REACHING 70 M.P.H.(61 KTS.), AND AFTER A TAKEOFF ROLL OF 2,000 FEET, THE PILOT FURTHER STATED THAT HE ROTATED AND LIFTED THE AIRCRAFT OFF THE CONCRETE RUNWAY BUT KEPT THE AIRCRAFT IN GROUND EFFECT WHEN IT WAS UNABLE TO REACH CLIMB SPEED. P.I.C. ABORTED THE TAKEOFF PAST THE RUNWAY DEPARTURE END BY REDUCING POWER AND LOWERING THE NOSE AND THE AIRCRAFT IMPACTED THE GROUND IN A GRASSY CLEARWAY INSIDE THE AIRPORT PERIMETER. POST-ACCIDENT CALCULATIONS REVEAL THAT THE AIRCRAFT WEIGHT AND BALANCE WAS AT OR VERY CLOSE TO THE MAXIMUM TAKEOFF GROSS WEIGHT (MTOGW), AND WITHIN C.G. LIMITS. AIRCRAFT PERFORMANCE ESTIMATES, BASED ON FIELD ELEVATION AND NONSTANDARD TEMPERATURE AND PRESSURE AT THE TIME OF THE ACCIDENT INDICATED A DENSITY ALTITUDE OF 3,600 FEET WITH HEADWINDS OF LESS THAN FIVE KNOTS. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1986_MKC86LA158.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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