LAX94LA129

NTSB accident investigation · Piper PA-31-350 · Phoenix, AZ · February 21, 1994

Accident · Serious injuriesLimited investigationFinal report
Date
February 21, 1994, 07:37 local (14:37 UTC)
Place
Phoenix, AZ
Injuries
1 serious, 3 uninjured
Damage
Minor damage
Phase of flight
Landing
Aircraft
N4109DPiper PA-31-350
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 1994
Report
Approved by Office Director
FAA report
19940221002739A
Case key
28669

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 loose main fuel line 'b' nut due to the improper installation of the right engine by company maintenance personnel.

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.

FireLanding - roll
Fuel system,line - looseCause
Maintenance,installation - improperCompany maintenance personnelCause

Analysis

During the landing roll-out, the right engine main fuel line 'b' nut became loose causing a fire in the engine's accessory compartment. One passenger sustained a fractured ankle during the evacuation process. Company maintenance personnel replaced both engines three days before the accident.

Factual narrative

On February 21, 1994, at 0737 hours mountain standard time, a Piper PA-31-350, N4109D, right engine compartment caught fire during the landing roll-out on runway 08R at Phoenix Sky Harbor Airport, Phoenix, Arizona. The pilots were completing a visual flight rules scheduled commuter flight under Title 14 CFR Part 135. The airplane, operated by Arizona Pacific Airlines, Prescott, Arizona, sustained minor damage. The two flight crewmembers and one passenger were not injured. Another passenger fractured his ankle during the evacuation process. Visual meteorological conditions prevailed. The flight originated at Ernest J. Love Field, Prescott, Arizona, at 0712 hours.

Both pilots reported in the Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2, that the local controller informed them of the fire shortly after touchdown. When the pilot-in-command (PIC) applied the brakes, he noticed that the right brake was ineffective. The PIC executed a left 180-degree turn to stop the airplane.

After the airplane stopped, the second-in-command (SIC) assisted the passengers evacuate the airplane through the main cabin door. The PIC evacuated the airplane through the left front door.

Messrs. Paul Texter and Dean Hennies, Aviation Safety Inspectors, Federal Aviation Administration (FAA), Scottsdale [Arizona] Flight Standards District Office, conducted the on-scene investigation. Inspector Texter reported that the origin of the fire was in the firewall area next to the main fuel line. He also said that Inspector Hennies found the right main fuel line "B" nut loose, and that both engines were replaced on February 18, 1994.

Aircraft

Registration
N4109D
Reported as
Piper PA-31-350
Category
Airplane
Serial number
31-8253012
Engine
Lycoming TSIO-540, 350 horsepower, reciprocating
Damage
Minor damage
Fire
In-Flight
Flight
Part 135
Operator
Arizona Pacific Airlines
Registered owner
Aviation Investment Ptnrship
Airworthiness certificate
Standard, Normal
Departed
PRC · Prescott, AZ
Destination
PHX · AZ
Flight plan
VFR
Airport
PHX · Phoenix Sky Harbor Intl, runway 8R, 10,300 × 150 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
27
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,820 total · 456 in this make and model · 1,550 as pilot in command · 250 in the last 90 days · 25 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 4 knots
Visibility
50 statute miles
Lowest ceiling
8,000 ft broken
Temperature
52 °F, dew point 37 °F
Altimeter
30.00 inHg
Observed at
PHX

FAA reports on this event · 1

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