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Aviation safety reports, made easier to study

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NTSB Report

April 22, 1997 · Cessna 150 · N6717F

Lehighton, PA

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
April 22, 1997
Injury Outcomes
2 injuries (2 minor injuries)
Location
Lehighton, PA
Aircraft
Cessna 150
Tail Number
N6717F
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
NYC97LA079

The student pilot was undergoing a private pilot proficiency evaluation. During a go-around following a simulated forced landing, the flaps failed to retract. The student pilot gave the controls to the flight examiner and replaced the fuse for the flap actuating system. The fuse was installed with the flap handle in the fully retracted position, which resulted in the operation and inadvertent retraction of the flaps. The student pilot stated that the airplane then stalled, descended 60 to 100 feet, and landed hard in a field.

NTSB Probable Cause

replacement of the flap actuating system fuse by the pilot-in-command with the flap actuating handle in the fully retracted position. This resulted in the retraction of the flaps, an inadvertent stall/mush, and the subsequent in-flight collision with terrain.

Full Narrative

On April 22, 1997, at 1345 eastern daylight time, a Cessna 150, N6717F, sustained substantial damage when it collided with terrain during a go-around at the Jake Arner Memorial Airport (22N), Lehighton, Pennsylvania. The student pilot and a Federal Aviation Administration Aviation Safety Inspector (Operations, FSDO #05) received minor injuries. Visual meteorological conditions prevailed at the time of the accident and a VFR flight plan was filed. The private pilot proficiency evaluation flight originated at 22N, at 1300, and was conducted under 14 CFR Part 91. According to the FAA Inspector (FSDO #5), the student pilot applicant was performing a simulated forced landing to runway 26 and was set up for the intended point of touchdown. The Inspector said he asked the applicant to perform a go-around, and when the flap lever was moved, the flaps failed to retract. The applicant gave the controls to the FAA Inspector and replaced a blown fuse for the flap actuating system. The Inspector explained that the fuse was replaced with the flap lever in the full 'up' position, which caused the flaps to retract and a loss of lift. He said, "...the airplane lost lift, stalled, dropped 60 to 100 feet and landed hard in a field..." The Inspector stated that there were no other mechanical deficiencies with the airplane. He stated that the flaps functioned properly during pre-flight and during the 45 minutes of flight prior to the accident. An FAA Aviation Safety Inspector (Operations, FSDO #13) recovered the blown fuse at the accident site. The student pilot had approximately 68 hours of flight experience.

Flight

Event TypeAccident
Event Time13:45 EDT
Nearest AirportJake Arner Memorial (1nm WNW)
Runway26
Runway Length3000 ft
Runway Width50 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 150
Tail NumberN6717F
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-200 · Reciprocating · 100
Seats2

People & Injuries

Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 53 · Third Class

Conditions

ConditionsVMC
LightDaylight
Wind5 kt
Visibility10 sm
CeilingBroken clouds 8500 ft
Temperature / Dew Point63 F / 0 C
Altimeter29.00 inHg
Observation Time16:54
Weather SourceWFAC

Appendix: Source Data