ANC95LA043

NTSB accident investigation · Cessna 180A · Bethel, AK · April 15, 1995

Accident · No injuriesLimited investigationFinal report
Date
April 14, 1995, 18:00 local (Apr 15, 1995, 02:00 UTC)
Place
Bethel, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N9736BCessna 180A
Weather
Visual (VMC) · Day
Status
Completed · report September 24, 1995
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19950414009419A
Case key
2640

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 Cessna pilot's failure to maintain sufficient clearance from the transport airplane while taxiing, and the ground personnel's inadequate lookout while marshalling the transport airplane from the ramp.

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.

Propeller blast or jet exhaust/suctionTaxi - from landing
Clearance - not maintainedPilot in commandCause
Visual lookout - inadequateGround personnelCause
Nose downTaxi - from landing

Analysis

The Cessna was substantially damaged when it nosed down after encountering jet blast from a Boeing 737 that initiated taxi for takeoff. Ramp personnel marshalling the 737 from the ramp stated that the Cessna was not observed until after the 737 moved ahead about 10 feet and started turning to the right toward the taxiway. The ramp personnel noted that the Cessna was within the confines of the airline's marked perimeter area at the time of the accident.

Factual narrative

On April 14, 1995, about 1800 Alaska daylight time, a Cessna 180A airplane, N9736B, sustained substantial damage while taxiing to parking after landing at the Bethel Airport, Bethel, Alaska. The solo airline transport certificated pilot was not injured. The airplane was owned by the pilot and operated by Kusko Aviation, and was operating in visual meteorological conditions as a 14 CFR Part 91 positioning flight.

The pilot reported he was taxiing behind a parked Mark Air 737-200 airplane while en route to the parking ramp for Kusko Aviation. He said as he approached the Mark Air jet, the jet accelerated away from the parking ramp to begin taxi for takeoff. The resulting exhaust thrust from the jet struck the Cessna, and the Cessna nosed down, damaging the propeller, cowl, left aileron and left wing tip.

The flight crew of the Mark Air jet were facing away from the Cessna, and were unaware of the accident. A Mark Air employee who was marshalling the 737 from parking stated that he was "moving the aircraft forward for about 7 to 10 feet then I started to turn the aircraft to my left. About five feet into the turn, I saw a small single-engine aircraft cross Mark Air's ramp going into their own ramp. That was when the single- engine's tail caught air and landing on his nose and left wing." The Mark Air airplane, N676MA, Flight 24, was operating as a 14 CFR Part 121 passenger flight, and was departing for Anchorage, Alaska, with two flight crew members, two flight attendants, and 67 passengers aboard.

Aircraft

Registration
N9736B
Reported as
Cessna 180A
Category
Airplane
Serial number
50034
Airframe hours
4,300
Engine
Continental O-470-K, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Kusko Aviation
Registered owner
Alfred J. Daigneau
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · April 12, 1995 · 8 hours before
Departed
ATT · Atmautluk, AK
Destination
PABE
Flight plan
Company VFR
Airport
BET · Bethel

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
52
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
10,000 total · 1,000 in this make and model · 9,000 as pilot in command · 150 in the last 90 days · 50 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 11 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
43 °F, dew point 28 °F
Altimeter
29.00 inHg
Observed at
BET

FAA reports on this event · 1

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