NYC96LA184

NTSB accident investigation · Cessna 172N · Shirley, NY · September 16, 1996

Accident · No injuriesLimited investigationFinal report
Date
September 16, 1996, 11:15 local (15:15 UTC)
Place
Shirley, NY
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N737GJCessna 172N
Weather
Visual (VMC) · Day
Status
Completed · report April 29, 1997
Report
Approved by Office Director
FAA report
19960916028499A
Case key
39241

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 prematurely retraction of flaps during the go-around, which resulted in settling (mushing) of the airplane and a collision with the ground.

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.

In flight collision with terrain/waterGo-around (vfr)
Touch-and-go - initiatedPilot in command
Raising of flaps - prematurePilot in commandCause
Stall/mush

Analysis

The solo student pilot had been performing touch and go landings. During the fifth touch and go landing, a gust of wind raised the left wing, and the airplane drifted right. The student initiated a go-around, then he retracted the flaps from 20 to 0 degrees continuously. The airplane then settled and collided with the ground. The student did not report any mechanical malfunction and stated that he should not have retracted the flaps continuously. The Cessna Pilot's Operating Handbook stated that for a go-around, retract the flaps to 20 degrees immediately, then to 10 degrees after clearing all obstacles, finally to 0 degrees after reaching a safe altitude and 60 knots indicated airspeed.

Factual narrative

On September 16, 1996, about 1115 eastern daylight time, a Cessna 172N, N737GJ, was substantially damaged when it collided with the ground during a go-around at the Brookhaven Airport, Shirley, New York. The student pilot, sole occupant, was not injured. Visual meteorological conditions prevailed for the flight that departed Farmingdale, New York. No flight plan was filed for the instructional flight conducted under 14 CFR Part 91.

During a telephone interview with the student pilot (SP) stated that he planned to practice landings at Brookhaven. When he radioed his intentions, runway 33 was given as the active runway. During the landings, he compensated for a left cross wind with the wing-low method. On the fifth landing, a gust of wind raised the left wing, and the airplane drifted off the right side of the runway. The SP performed a go-around, during which, he retracted the flaps from 20 to 0 degrees continuously. The SP stated that as soon as he retracted the flaps, the airplane sank, and the right wing contacted the ground. He also stated that he should not have retracted the flaps continuously. The SP could not recall whether he was taught to raise the flaps in increments or continuously when conducting a go-around.

According to a Federal Aviation Administration (FAA) Inspector, runway 6-24 at Brookhaven was closed. The winds at Brookhaven were reported to be from 230 degrees at 10 knots, with gusts to 15 knots. Examination of the wreckage by the FAA Inspector did not disclose evidence of malfunctions with the airplane, nor did the pilot report any.

The SP had a total flight time of 73 hours, of which 21 were solo.

According to the Cessna 172 Pilot's Operating Handbook, for a go-around, it stated:

BALKED LANDING 1. Throttle -- FULL OPEN. 2. Carburetor Heat -- COLD. 3. Wing Flaps -- 20 degrees (immediately). 4. Climb Speed -- 55KIAS. 5. Wing Flaps -- 10 degrees (after reaching a safe altitude and 60KIAS).

Aircraft

Registration
N737GJ
Reported as
Cessna 172N
Category
Airplane
Serial number
17269404
Airframe hours
4,029
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Nomad Aviation Incorporated
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 2, 1996 · 79 hours before
Departed
FRG · Farmingdale, NY
Destination
HWV
Airport
HWV · Brookhaven, runway 33, 4,325 × 150 ft, asphalt

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
35
Certificate
Student
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
73 total · 66 in this make and model · 21 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 10 knots
Visibility
10 statute miles
Lowest ceiling
15,000 ft broken
Temperature
70 °F
Altimeter
30.00 inHg
Observed at
FOK, 10 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.