MIA97IA016

NTSB incident investigation · Piper PA-31-350 · Mccomb, MS · October 31, 1996

Incident · No injuriesIncident investigationFinal report
Date
October 31, 1996, 14:15 local (20:15 UTC)
Place
Mccomb, MS
Injuries
4 uninjured
Damage
Minor damage
Phase of flight
Initial climb
Aircraft
N120JDPiper PA-31-350
Weather
Visual (VMC) · Day
Status
Completed · report February 28, 1997
Report
Approved by Office Director
FAA report
19961031037889I
Case key
38158

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

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Probable cause

the lineman's fueling of the aircraft with the wrong type fuel, the pilot's failure to verify the type of fuel added to the aircraft before flight, and failure of the refueling facility to be equipped with the proper fuel nozzle.

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 power(total) - nonmechanicalTakeoff - initial climb
Airport facilities,fuel storage - inadequateCause
Refueling - improperGround personnelCause
Fluid,fuel grade - incorrectCause
Aircraft preflight - inadequatePilot in commandCause
Forced landingEmergency landing after takeoff

Analysis

The pilot requested that the aircraft be fueled with 40 gallons of 100LL avgas. The lineman fueled the aircraft with 40 gallons of Jet-A fuel. This made the total fuel on board about 80 gallons (about a 50 percent to 50 percent mixture of avgas and Jet-A). The pilot signed the fuel receipt, which indicated Jet-A fuel, and then departed. The lineman did not observe the pilot perform a preflight inspection. Both engines lost power after takeoff, and a forced landing was made in a field. The aircraft was equipped with restricted fuel ports to prevent this type of misfueling; however, the fuel pump (from which N120JD was fueled) was not equipped with the respective large size nozzle that was designed to prevent the problem.

Factual narrative

On October 31, 1996, about 1415 central standard time, a Piper PA-31-350, N120JD, registered to SOHO Air, Inc., lost power in both engines, shortly after takeoff from McComb-Pike County Airport, McComb, Mississippi, while on a 14 CFR Part 91 corporate flight. Visual meteorological conditions prevailed at the time and an instrument flight rules flight plan was filed. The aircraft received minor damage and the airline transport-rated pilot and three passengers were not injured. The flight was originating at the time of the accident.

The pilot stated that after landing at the airport, he requested that the lineman fuel the aircraft with 20 gallons of 100LL avgas in each main tank. This brought the fuel capacity to about 80 gallons. About 30 minutes after fueling he loaded the passengers, started the engines, and taxied to the runway where he made a normal engine run-up. After departure, while climbing through about 300 feet agl, one or both engines surged. At 400 feet agl, both engines lost power. He made a forced landing in a field.

Records obtained from the aircraft fueling company which fueled N120JD just before takeoff shows the aircraft was fueled with 40 gallons of Jet-A fuel. The pilot had signed the receipt indicating the aircraft had been fueled with Jet-A fuel. The lineman stated he had fueled the aircraft with Jet-A fuel. He did not see the pilot check the fuel in wings before takeoff.

Examination of the aircraft after the accident by FAA inspectors showed that the main fuel tanks and engine fuel strainers contained a mixture of 100LL avgas and Jet-A fuel. Examination of the fuel pump which was used to fuel N120JD showed the pump was not equipped with a nozzle designed to prevent misfueling of aircraft with Jet-A. N120JD did have restricted fuel ports to prevent misfueling.

Aircraft

Registration
N120JD
Reported as
Piper PA-31-350
Category
Airplane
Serial number
31-8152179
Airframe hours
4,101
Engine
Lycoming TIO-540-J2BD, 350 lbs thrust, reciprocating
Damage
Minor damage
Flight
Executive/Corporate · Part 91
Registered owner
Soho Air, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 3, 1996 · 141 hours before
Departed
MCB
Destination
NEW · New Orleans, LA
Flight plan
IFR

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
Certificates
Airline transport, Flight engineer, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
8,425 total · 783 in this make and model · 8,130 as pilot in command · 67 in the last 90 days · 23 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 59 °F
Altimeter
30.00 inHg
Observed at
MCB, 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.