- Date
- August 30, 2017
- Place
- Saipan
- Injuries
- 7 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N4078JPiper PA 31
- Defining event
- Takeoff: Birdstrike
- Weather
- Visual (VMC) · Day
- Status
- Completed · report April 23, 2018
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20170830014039A
- Case key
- 96145
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Impact with multiple birds while retracting the landing gear, which resulted in the subsequent failure of the right inboard main landing gear door actuator hose and prevented the pilot from being able to extend the landing gear.
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.
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 pilot reported that, during the initial climb, about 150 ft above the ground, while the landing gear were being retracted, the airplane impacted a flock of medium-sized birds. He noted that the landing gear unlock indicator remained illuminated and that the landing gear handle would not return to the up neutral position. No degradation of performance was noted, so the pilot chose to continue to his destination. About 20 miles from the airport, the pilot attempted to lower the landing gear but was unsuccessful. He contacted maintenance personnel on the ground and advised them of the landing gear issue. The ground maintenance personnel visually verified that the nose and right main landing gear (MLG) were down. The pilot performed the emergency gear extension checklist and noted little to no resistance on the hand pump. The pilot made multiple attempts to lower the landing gear without success. During the landing, the right MLG collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the fuselage. Postaccident examination revealed snarge on both horizonal stabilizers, the left wing, and the fuselage and that the right inboard MLG door actuator hose had failed.
Factual narrative
The pilot reported that during the initial climb, about 150 feet above the ground, while the landing gear was being retracted, the airplane impacted a flock of medium sized birds. He noted that the landing gear unlock indicator remained illuminated and the landing gear handle would not return to the up neutral position. No degradation of performance was noted, so the pilot choose to continue to his destination. About 20 miles from the airport, the pilot attempted to lower the landing gear, but was unsuccessful. He contacted maintenance personnel on the ground and advised them of the landing gear issue. The ground maintenance personnel visually verified that the nose and right main landing gear were down. The pilot performed the emergency gear extension checklist and noted little to no resistance on the hand pump. After multiple attempts to lower the landing gear, Airport Rescue and Fire Fighting Support was requested. Soon after, the pilot received clearance to land. During the landing the right main landing gear collapsed and the left wing impacted the ground. The airplane sustained substantial damage to the fuselage. A postaccident examination revealed snarge on both horizonal stabilizers, left wing, and fuselage. It was noted that the right inboard main landing gear door actuator hose had failed.
Aircraft
- Registration
- N4078J
- Reported as
- Piper PA 31 (350)
- Category
- Airplane
- Serial number
- 31-8152057
- Built
- 1980
- Airframe hours
- 9,341.1
- Engines
- Lycoming TIO-540-J2BD, 350 horsepower, reciprocatingLycoming TIO-540-J2BD, 350 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 135
- Operator
- Star Marianas Air, Inc.
- Registered owner
- Marianas Transportation Management Solut
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Continuous airworthiness · August 2, 2017
- Departed
- GRO · Rota Island
- Destination
- GSN · Saipan
- Flight plan
- IFR
- Airport
- GSN · Francisco C Ada/Saipan Intl, runway 24, 7,001 × 100 ft, asphalt
- Equipment
- Stall warning system, Auto-pilot
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
- 43
- Injuries
- None
- Certificate
- Airline transport
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Without waivers/limitations
- Last flight review
- April 18, 2017
- Seat
- Left
- Restraint
- 3-point
- Flight hours
- 5,847 total · 2,005 in this make and model · 5,714 as pilot in command · 186 in the last 90 days · 128 in the last 30 days · 6 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 200° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 11,000 ft broken
- Temperature
- 81 °F, dew point 75 °F
- Altimeter
- 29.79 inHg
- Observed at
- PGSF
Docket · 3
The files NTSB released with the investigation on March 12, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.2 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.