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NTSB Report

November 6, 2011 · Beech A36 · N64Z

Yucca Valley, CA

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
November 6, 2011
Injury Outcomes
No injuries (2 uninjured)
Location
Yucca Valley, CA
Aircraft
Beech A36
Tail Number
N64Z
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR12LA027

During a training flight, the flight instructor and the pilot receiving instruction were practicing procedures for a simulated engine failure. According to the pilot receiving instruction, when he attempted to reapply power the engine was unresponsive. They were forced to make an off-airport landing, which resulted in substantial damage to the right wing. During the postaccident examination, the engine was test run; no mechanical anomalies were revealed that precluded normal operation. The reason for the loss of engine power could not be determined.

NTSB Probable Cause

A loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.

Full Narrative

HISTORY OF FLIGHT On November 6, 2011, about 0955 Pacific standard time (PST), a Beech A36, N64Z, made a forced landing following a loss of engine power at Yucca Valley Airport, Yucca Valley, California. The owner/pilot was operating the airplane under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The certified flight instructor (CFI) and private pilot undergoing instruction (PUI) were not injured; the airplane sustained substantial damage to the right wing. The local instructional flight departed Yucca Valley about 0925. Visual meteorological conditions prevailed, and no flight plan had been filed. The owner/PUI reported that they were performing a simulated loss of engine power. When he attempted to reapply power, the engine did not respond. They made a forced landing near the airport. During the landing, the right wing struck a road sign, and the landing nose gear separated from the fuselage. The PUI reported that the training flight had departed with approximately 35 gallons of fuel. During the recovery of the airplane, approximately 25 gallons of fuel was drained from both fuel tanks. On November 28, 2011, investigators examined the airplane and engine at Aircraftsman, Inc., Chino, California. The engine field run report is attached to the docket. The engine was inspected and the air induction filter box had sustained impact damage during the forced landing. No other damage to the engine was observed. After removing the damaged propeller a replacement propeller was installed. An external fuel supply was attached to the fuel valve, and the engine was started and ran with no abnormalities noted.

Flight

Event TypeAccident
Event Time09:55 PST
Nearest AirportYucca Valley Airport (0nm)
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBeech A36
Tail NumberN64Z
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsCont Motor · IO 550 B4 · Reciprocating · 300
Seats6

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 54 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
Wind20° @ 4 kt
Visibility10 sm
CeilingBroken clouds 11000 ft
Temperature / Dew Point52 / 30 C
Altimeter30.04 inHg
Observation Time17:56
Weather SourceWFAC

Appendix: Source Data