Thursday, August 08, 2019

Landing Gear Collapse: Beech 19A, N6523T; accident occurred August 04, 2017 in Palmer, Alaska

The National Transportation Safety Board did not travel to the scene of this accident.

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: Palmer, AK
Accident Number: ANC17LA042
Date & Time: 08/04/2017, 1900 AKD
Registration: N6523T
Aircraft: BEECH 19A
Aircraft Damage: Substantial
Defining Event: Landing gear collapse
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal 

On August 4, 2017, about 1900 Alaska daylight time, a tricycle gear equipped Beech BE19 airplane, N6523T, sustained substantial damage while landing at a remote unimproved airstrip, about 25 miles southeast of Palmer, Alaska. The airplane was being operated by the pilot as a 14 Code of Federal Regulations Part 91 visual flight rules flight. The private pilot and passenger were not injured. Visual meteorological conditions prevailed, and no flight plan had been filed. The flight departed Merrill Field Airport (PAMR), Anchorage, Alaska at about 1745.

According to the pilot, while landing at a remote unimproved airstrip, the right main tire impacted a rock. The airplane began to veer to the right, and the right main gear collapsed, which resulted in substantial damage to the empennage and horizontal stabilizer.

A National Transportation Safety Board (NTSB) Senior Metallurgist reported that visual and magnified optical examination of the fractured surfaces revealed features consistent with a bending overstress separation. No indications of preexisting fatigue, corrosion or significant porosity were detected. (A synopsis of the NTSB Metallurgist's case review is included in the public docket for this accident.)

In the recommendation section of the NTSB Accident/Incident Reporting Form 6120.1, the pilot stated that the accident may have been avoided if the Federal Aviation Administration or Alaska Department of Transportation would have provided minimal funding to local pilot groups to provide minimal maintenance of routinely used backcountry airstrips.

Pilot Information

Certificate: Private
Age: 33, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 Without Waivers/Limitations
Last FAA Medical Exam: 08/20/2015
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time:  1200 hours (Total, all aircraft), 303 hours (Total, this make and model), 1127 hours (Pilot In Command, all aircraft), 62 hours (Last 90 days, all aircraft), 26 hours (Last 30 days, all aircraft), 1 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: BEECH
Registration: N6523T
Model/Series: 19A A
Aircraft Category: Airplane
Year of Manufacture: 1968
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: MB-357
Landing Gear Type: Tricycle
Seats: 4
Date/Type of Last Inspection: 06/09/2017, Annual
Certified Max Gross Wt.: 2250 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 3802.03 Hours at time of accident
Engine Manufacturer: LYCOMING
ELT: C126 installed, not activated
Engine Model/Series: O-320 SERIES
Registered Owner: On file
Rated Power: 160 hp
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: PAAQ
Distance from Accident Site: 25 Nautical Miles
Observation Time: 0253 UTC
Direction from Accident Site: 318°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 3 knots /
Turbulence Type Forecast/Actual:
Wind Direction: 190°
Turbulence Severity Forecast/Actual:
Altimeter Setting: 30.19 inches Hg
Temperature/Dew Point: 22°C / 13°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: ANCHORAGE, AK (MRI)
Type of Flight Plan Filed: None
Destination: ANCHORAGE, AK (MRI)
Type of Clearance: None
Departure Time: 1745 AKD
Type of Airspace: Class G 

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 62.521944, -148.587222 (est)

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