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Aviation safety reports, made easier to study

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NTSB Report

April 26, 2012 · Beech A36 · N4830M

Albuquerque, NM

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
April 26, 2012
Injury Outcomes
No injuries (1 uninjured)
Location
Albuquerque, NM
Aircraft
Beech A36
Tail Number
N4830M
Operator
Gordon Enterprises
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN12LA261

On initial climb, the airplane’s engine lost partial power. The pilot was unable to maintain altitude and airspeed and performed an off-field landing. An examination of the engine revealed that the intake valve on the No. 1 cylinder was stuck in the open position. No other anomalies with the airframe or engine were noted.

NTSB Probable Cause

The partial loss of engine power due to an intake valve that was stuck in the open position.

Full Narrative

On April 26, 2012, about 0805 mountain daylight time, a Beech A36 airplane, N4830M, conducted a forced landing, following a loss of engine power, near Albuquerque, New Mexico. The private pilot and the passenger were not injured and the airplane sustained substantial damage. The airplane was registered to and operated by Gordon Enterprises, Albuquerque, New Mexico, under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which operated without a flight plan. The local flight was originating from the Double Eagle II Airport (KAEG), Albuquerque, New Mexico, at the time of the accident. According statements provided by the pilot, the accident flight was the airplane’s first flight in several months. The pilot reported that on initial climb, the airplane's acceleration and climb stopped. The engine lost partial power. Unable to maintain flight, the pilot initially attempted to return to the airport, but was unable to make the airport, so he elected to conduct a forced landing approach to a field. An examination of the engine conducted by inspectors from the Federal Aviation Administration revealed that the number one cylinder intake valve was partially stuck. No other defects were noted with the engine. No deficiencies were noted with the airframe. A bench test conducted on the airplane’s propeller governor did not detect any defects. A photo of the airplane’s propeller, provided by the FAA, show curling of all three of the propeller blades as well as leading edge polishing on at least two blades.

Flight

Event TypeAccident
Event Time08:05 MDT
Nearest AirportDouble Eagle Ii (3nm)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBeech A36
Tail NumberN4830M
Aircraft CategoryAir
DamageSubstantial
OperatorGordon Enterprises
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsCont Motor · IO-520-BA-14 · Reciprocating · 285
Seats6

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 71 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
Wind40° @ 4 kt
Visibility10 sm
CeilingBroken clouds 12000 ft
Temperature / Dew Point61 F / 36 C
Altimeter30.09 inHg
Observation Time13:50
Weather SourceWFAC

Appendix: Source Data