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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

July 23, 2008 · Beech 35-C33A · N7965M

Longmont, CO

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
July 23, 2008
Injury Outcomes
No injuries (2 uninjured)
Location
Longmont, CO
Aircraft
Beech 35-C33A
Tail Number
N7965M
Operator
Brian Higley
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN08LA128

The pilot said that when he was on final approach, he noticed he was slightly below the glidepath and added power to compensate, The engine did not respond and he was forced to land in a barley field. Examination of the engine disclosed power train continuity and thumb compression on all cylinders. The fractured throttle arm failed in overload. The reason for the loss of power was not determined.

NTSB Probable Cause

A total loss of engine power for reasons undetermined. Contributing to the accident was the unsuitable terrain on which to make a forced landing.

Full Narrative

On July 23, 2008, at 1008 mountain daylight time, a Beech 35-C33A, N7965M, registered to and piloted by the pilot, was substantially damaged when the engine lost power and the airplane landed short of runway 29 at Vance Brand Municipal Airport (LMO), Longmont, Colorado. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91, and a visual flight rules (VFR) flight plan had been filed and activated. There were no injuries to the pilot and his passenger. The cross-country flight originated from Wendover (ENV), Nevada, approximately 0750. According to the pilot's accident report, he descended from 17,000 feet under partial power and entered a 45-degree entry for a left downwind to runway 29. The landing gear was extended and he completed the pre-landing checklist. On final approach with 20-degrees of flaps extended, the pilot noticed he was slightly below the glidepath and added power to compensate. The engine did not respond. He was forced to land in a barley field. The nose and main landing gear attach points were damaged, the firewall was buckled, and both wings were dented and punctured. The airplane and engine were later examined at the facilities of Beegles Aircraft Service, Greeley, Colorado. Power train continuity was noted. There was thumb compression on all cylinders. The throttle arm was found fractured in two places. It was sent to NTSB's metallurgical laboratory for analysis. According to their report, "Fracture features generally showed tear ridges and dimples intermixed with casting voids consistent with overstress fracture. No evidence of preexisting cracking such as fatigue features was observed."

Flight

Event TypeAccident
Event Time10:08 MDT
Nearest AirportVance Brand (1nm)
Runway29
Runway Length4800 ft
Runway Width75 ft
Flight Plan FiledVfif
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBeech 35-C33A
Tail NumberN7965M
Aircraft CategoryAir
DamageSubstantial
OperatorBrian Higley
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-BB · Reciprocating · 285
Seats4

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 35 · Third Class · None
Crew 2Age 35 · First Class · None

Conditions

ConditionsVMC
LightDaylight
Wind40° @ 3 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point57
Altimeter30.07 inHg
Observation Time16:15
Weather SourceWFAC

Appendix: Source Data