NYC01LA146

NTSB accident investigation · Cessna 150J · West Mifflin, PA · June 14, 2001

Accident · Minor injuriesLimited investigationFinal report
Date
June 14, 2001, 12:10 local (16:10 UTC)
Place
West Mifflin, PA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N61138Cessna 150J
Weather
Visual (VMC) · Day
Status
Completed · report February 7, 2002
Report
Approved by Office Director
Parties
FAA
FAA report
20010614017099A
Case key
52491

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 failure to maintain airspeed while picking up a banner, and subsequent delay in releasing the banner, resulting in a stall/mush.

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 control - in flightManeuvering
Airspeed - not maintainedPilot in commandCause
Load jettison - delayedPilot in commandCause
Stall/mush - inadvertentPilot in command
In flight collision with objectDescent - emergency
Object - wire,transmission

Analysis

As the airplane departed from the runway, the pilot deployed the tow hook and climbed to 150 feet. The pilot then "sidestepped" to the right of the runway to pick up the banner, which was set up on the grass about half way down the runway. The pilot "crossed the pickup rope at too slow of an airspeed, approximately 55-60 MPH, versus a normal target speed of approximately 70 to 80 MPH." The pilot then pitched the airplane upward, catching the rope with the tow hook, and soon realized that "there were problems in climbing out." After about 5 seconds, the pilot considered releasing the banner, but decided against the idea, due to releasing the banner on a crossing runway. After clearing the runway area, the pilot released the banner, about 100 feet above the ground, "and in an incipient stall attitude." Unable to climb, and not enough altitude to gain any additional airspeed, the pilot began to raise and lower the nose of the airplane to avoid a stall. As the pilot maneuvered the airplane to an open parking lot for a forced landing, the airplane struck power lines and impacted a utility pole, shearing off the right wing. The airplane descended to the ground, and came to rest upright.

Factual narrative

On June 14, 2001, about 1210 eastern daylight time, a Cessna 150J, N61138, was substantially damaged when it collided with terrain during a banner pick-up near West Mifflin, Pennsylvania. The certificated commercial pilot sustained minor injuries. Visual meteorological conditions prevailed and no flight plan was filed for the local banner-tow flight conducted under 14 CFR Part 91.

According to the pilot, this was his second banner tow operation of the day. As the airplane departed from runway 31, the pilot deployed the tow hook and climbed to 150 feet. The pilot then "sidestepped" to the right of the runway to pick up the banner, which was set up on the grass about half way down the runway. In the initial climb, the pilot "throttled back" because on the previous banner pickup, he realized that he had "more than enough airspeed." However, on this attempt, "I crossed the pickup rope at too slow of an airspeed, approximately 55-60 MPH, versus a normal target speed of approximately 70 to 80 MPH." The pilot pitched the airplane upward, catching the rope with the tow hook, and soon realized that "there were problems in climbing out." The pilot reached down and placed his hand on the release lever as a precaution, but continued the climb. After about 5 seconds, the pilot considered releasing the banner, but decided against the idea, due to releasing the banner on a crossing runway. After clearing the runway area, the pilot released the banner, about 100 feet above the ground, "and in an incipient stall attitude." Unable to climb, and not enough altitude to gain any additional airspeed, the pilot began to raise and lower the nose of the airplane to avoid a stall. As the pilot maneuvered the airplane to an open parking lot for a forced landing, the airplane struck power lines and impacted a utility pole, shearing off the right wing. The airplane descended to the ground, and came to rest upright.

A Federal Aviation Administration inspector estimated that about 25 gallons of fuel was on board the airplane at the time of the accident.

The recorded weather at AGC, about the time of the accident, was winds from 180 degrees at 8 knots, and a temperature of 82 degrees Fahrenheit.

Aircraft

Registration
N61138
Reported as
Cessna 150J
Category
Airplane
Serial number
15070829
Airframe hours
2,795
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 91
Registered owner
David J. Shimeck
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 29, 2000 · 73 hours before
Departed
AGC · West Mifflin, PA
Destination
AGC
Airport
AGC · Allegheny County Airport, runway 31, 3,825 × 100 ft, concrete

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
45
Injuries
Minor
Certificates
Commercial, Flight instructor, Flight engineer
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Last flight review
January 22, 2001
Seat
Left
Flight hours
3,780 total · 500 in this make and model · 3,640 as pilot in command · 8 in the last 90 days · 8 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 8 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 70 °F
Altimeter
30.07 inHg
Observed at
AGC, 1 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.