WPR14LA307

NTSB accident investigation · Piper PA 46 350P · Auburn, WA · July 22, 2014

Accident · No injuriesLimited investigationFinal report
Date
July 22, 2014, 09:15 local (16:15 UTC)
Place
Auburn, WA
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N60PBPiper PA 46 350P
Defining event
Landing-landing roll: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report July 16, 2018
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
SEA FSDO
FAA report
20140722012639A
Case key
89714

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

A collapse of the nose landing gear for reasons that could not be determined based on the available information.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Not determinedNot determined › Not determined · Unknown/Not determinedPiper PA 46-350P: 8 casesAll aircraft: 2,247 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The private pilot reported that he performed the before landing checklist and verified that there were three green landing gear indicator lights illuminated. He added that the landing was "soft" and that he held the nose gear off the runway as long as possible. When the nose gear touched down, the airplane veered sharply to the left. The pilot applied right rudder control and brakes to avoid a runway excursion. The nose gear collapsed and the airplane skidded to a stop. The airplane was not made available for examination after the accident. A review of maintenance records indicated that a service bulletin (SB) to inspect the engine mounts for cracks, which the manufacturer considered mandatory, was not accomplished. The SB stated that cracks develop in the area of the nose gear actuator feet on the engine mount. The condition can occur when the nose landing gear is subjected to excessive loads due to hard landings, rough field operations, excessive-speed turns, improper airplane towing, or other improper operations. It is possible that the engine mount was cracked as identified in the service bulletin, which led to the nose gear collapse; however, because the airplane was not examined following the accident, the reason for the nose gear collapse could not be determined.

Factual narrative

On July 22, 2014, about 0915 Pacific daylight time, a Piper PA-46-350 airplane, N60PB, experienced a nose landing gear collapse during the landing roll at Auburn Municipal airport (S50), Auburn, Washington. The private pilot, commercial pilot, and two passengers were not injured. The airplane sustained substantial damage to the firewall and fuselage. The airplane was registered to Ards Fly LLC and operated by the pilot as a Title 14 Code of Federal Regulations Part 91 personal cross-country flight. Visual meteorological conditions prevailed, and no flight plan had been filed. The flight originated from Boeing Field, Seattle, Washington, at 0900 and was destined for Auburn. The pilot reported while in the pattern for landing, he accomplished the landing checklist and verified that the landing gear indicator lights were three green. The touchdown was soft and he held the nose gear up as long as possible during the landing roll on the main gear. When the nose gear touched down, the airplane veered sharply to the left. The pilot applied right rudder control and braking action to avoid going off the runway. The nose gear collapsed and the airplane skidded to a stop. A review of the aircraft maintenance records indicated that the last annual inspection was accomplished on August 20, 2013. On May 29, 2014, the logbook entry indicated that the main landing gear actuator upper attach bolts, and the nose strut steering arm bolts were re-torqued. The next day, the nose landing gear sequence valve was adjusted. The landing gear was swung through several cycles and the operation was checked ok. On June 5, 2014, Piper Aircraft issued Service Bulletin (SB) No. 1103E, which Piper considered compliance as mandatory to inspect the engine mount for cracks and replace for PA-46-350P and PA-46R-350T airplanes. There was no entry in the logbook to indicate that this Service Bulletin had been complied with. The SB indicated that cracks my develop in the area of the nose gear actuator attach feet on the engine mount. This condition can occur when the nose landing gear is subjected to excessive loads due to hard landings, rough field operations, excessive speed turns, improper towing, or other improper operations. The airplane was not made available for examination following the accident to determine the reason for the nose landing gear collapse. The pilot did not complete the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident Report Form 6120.1.

Aircraft

Registration
N60PB
Reported as
Piper PA 46 350P
Category
Airplane
Serial number
4636362
Built
2004
Airframe hours
1,690
Engine
Lycoming TIO 540 AE2A, 310 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 20, 2013
Departed
BFI · Seattle, WA
Destination
S50 · Auburn, WA
Airport
S50 · Auburn Municipal, runway 16, 3,400 × 75 ft, asphalt
Equipment
Unknown

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
Pilot
Age
44
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
June 21, 2014
Seat
Left
Flight hours
1,000 total · 500 in this make and model · 30 in the last 90 days
Role
Flight instructor
Age
33
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2
Seat
Right
Flight hours
4,500 total · 300 in this make and model · 50 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 4 knots
Visibility
10 statute miles
Lowest ceiling
9,000 ft broken
Temperature
59 °F, dew point 54 °F
Altimeter
30.05 inHg
Icing
Unknown
Turbulence
Unknown
Observed at
KSEA

Docket · 4

The files NTSB released with the investigation on May 2, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 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.