ATL96LA122

NTSB accident investigation · American AA5 · Crestview, FL · August 20, 1996

Accident · Serious injuriesLimited investigationFinal report
Date
August 20, 1996, 12:35 local (17:35 UTC)
Place
Crestview, FL
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N1198DAmerican AA5
Weather
Visual (VMC) · Day
Status
Completed · report May 2, 1997
Report
Approved by Office Director
FAA report
19960820023399A
Case key
3755

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

the pilot's improper operation of the powerplant controls.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerClimb
Weather condition - carburetor icing conditions
Powerplant controls - improper use ofPilot in commandCause
Forced landingEmergency landing
In flight collision with terrain/waterEmergency landing

Analysis

The flight instructor stated that he had given the student a simulated engine-out emergency. The student completed the emergency procedure, and had initiated a climb from the low approach when the engine failed to develop power. A 1700-foot long airstrip was selected for the emergency landing. The airplane went off the departure end of the west runway and collided with the ground. During the postaccident examination, the engine was functionally checked. The engine started and operated normally without difficulty. No mechanical problems were noted during the wreckage examination. The review of weather date disclosed that conditions were favorable for the formation of carburetor ice. The flight instructor reported using the carburetor heat. During a subsequent conversation, he stated that the engine was not cleared for more than 2 minutes during the descent for the simulated emergency.

Factual narrative

On August 20, 1996, at 1235 central daylight time, an American AA5, N1198D, collided with the ground during an attempted emergency landing to a grass airstrip three miles east of Crestview, Florida. The instructional flight operated under the provisions of Title 14 CFR Part 91 with a local flight plan filed through Eglin Air Force Base (AFB) flight operations. Visual weather conditions prevailed at the time of the accident. The airplane was substantially damaged; the flight instructor received minor injuries, and the dual student received serious injuries. The flight departed Eglin AFB, Florida, at 1145.

According to an official from the Eglin AFB Aero Club, the dual student was receiving familiarization training in the AA5 when the accident occurred. The flight instructor stated that he had given the dual student a simulated engine out emergency. The dual student had completed the emergency procedure, and had initiated a climb from the low approach when the engine failed to develop power. A 1700 foot long airstrip was selected for the emergency landing. The airplane went off the departure end of the west runway, and collided with the ground.

During the post-accident examination of the airplane, the engine was functionally check. The engine started and operated normally without difficulty. No mechanical problems were noted during the wreckage examination. The review of weather data disclosed that conditions were favorable for the formation of carburetor ice. The flight instructor initially reported that carburetor heat was used during the flight. But, during a subsequent conversation with a FAA inspector, he stated that the engine was not cleared for more than two minutes during the simulated engine out and emergency descent ( see attached FAA inspector's statement)

Aircraft

Registration
N1198D
Reported as
American AA5
Category
Airplane
Serial number
10156
Airframe hours
1,275
Engine
Lycoming O-360-A4K, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Eglin Afb Aero Club
Airworthiness certificate
Standard, Normal
Departed
KVPS · Eglin Afb, FL
Flight plan
VFR
Airport
NONE · Sweeney, runway 9, 1,800 × 200 ft, grass/turf

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
41
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
4,383 total · 64 in this make and model · 3,778 as pilot in command · 32 in the last 90 days · 3 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 10 knots
Visibility
7 statute miles
Lowest ceiling
25,000 ft broken
Temperature
86 °F, dew point 72 °F
Altimeter
30.00 inHg
Observed at
KCE, 4 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.