FTW02LA100

NTSB accident investigation · Piper PA-12 · Terrell, TX · March 22, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
March 22, 2002, 15:30 local (21:30 UTC)
Place
Terrell, TX
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N3687MPiper PA-12
Weather
Visual (VMC) · Day
Status
Completed · report April 8, 2003
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20020322022399A
Case key
54391

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 inadequate supervision by the flight instructor resulting in the dual student's failure to maintain the proper glidepath during the short field approach. A contributing factor was the downdraft.

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 objectApproach - vfr pattern - final approach
Object - tree(s)
Supervision - inadequatePilot in command(cfi)Cause
Weather condition - downdraftFactor
Proper glidepath - not maintainedDual studentCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

During the tailwheel endorsement flight, the private pilot was performing a short field landing to the runway when tree branches hit the fuselage, and the right wing struck the trees. Subsequently, the airplane slowed, nosed down, and turned right. The flight instructor recalled applying left aileron and left rudder with little or no effect, and the airplane hit the ground. The flight instructor believed that the airplane encountered a sink rate which he did not detect. He further stated that "the deterioring flight path went undetected" by him since he thought the airplane had cleared the area of the trees, which caused him to "under utilize visual clues more to the sides of the approach path." The pilot reported the wind was from the north-northwest at 5-15 mph and "bumpy."

Factual narrative

On March 22, 2002, approximately 1530 central standard time, a Piper PA-12, single-engine airplane, N3687M, sustained substantial damage when the airplane struck trees during final approach to the Terrell Municipal Airport, Terrell, Texas. The airplane was owned and operated by the flight instructor under 14 Code of Federal Regulations Part 91. The flight instructor and the private pilot, who was receiving instruction for his tailwheel endorsement, received minor injuries. Visual meteorological conditions prevailed for the local flight, and a flight plan was not filed. The flight originated from Terrell approximately 1430.

The flight instructor reported that he had flown the airplane with the private pilot earlier that day for an accumulated flight time of 3.1 hours during the completion of the private pilot's biennial flight review. No aircraft discrepancies were noted during the flights. Subsequently, the airplane was refueled for the tailwheel endorsement flight. The private pilot was performing a short field landing to runway 35 when tree branches hit the fuselage, and the right wing struck the trees. Subsequently, the aircraft slowed, nosed down, and turned right. The flight instructor recalled applying left aileron and left rudder which produced little or no effect, and the airplane hit the ground.

The flight instructor stated that he believed that the airplane encountered a sink rate which he did not detect. He further stated that "the deterioring flight path went undetected" by him since he thought the airplane had cleared the area of the trees, which caused him to "under utilize visual clues more to the sides of the approach path."

The flight instructor reported the wind was northerly at 5-15 mph. The private pilot reported the wind from the northwest at 5-10 mph and "bumpy."

The FAA inspector, who responded to the site, found the airplane approximately 400 feet short of the runway. There were numerous tree branches broken at a height of approximately 60 feet agl. The main wreckage was found approximately 100 feet beyond the trees. The wing spars and ribs were damaged, and the firewall and fuselage were buckled. A gouge was found in the leading edge of a bent propeller blade.

Aircraft

Registration
N3687M
Reported as
Piper PA-12
Category
Airplane
Serial number
12-2535
Airframe hours
1,590
Engine
Lycoming O-320-B1A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
George E. Toombs Jr.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 3, 2001 · 62 hours before
Departed
TRL · Terrell, TX
Airport
TRL · Terrell Municipal, runway 35, 4,000 × 75 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
61
Injuries
Minor
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
February 7, 2002
Seat
Rear
Flight hours
29,633 total · 480 in this make and model · 26,716 as pilot in command · 126 in the last 90 days · 34 in the last 30 days · 5 in the last 24 hours
Role
Pilot
Age
37
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
March 22, 2002
Seat
Front
Flight hours
190 total · 4 in this make and model · 150 as pilot in command · 4 in the last 90 days · 4 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F

Docket · 2

The files NTSB released with the investigation on December 19, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.9 MB in all.

FAA reports on this event · 1

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