# NTSB ANC19CA010: Piper PA31, N995AK, Chignik Lagoon, AK, January 21, 2019 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Data collection · Final report - Date: January 21, 2019, 13:05 local (22:05 UTC) - Place: Chignik Lagoon, AK - Coordinates: 56.308887, -158.53582 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=56.3089&lon=-158.5358&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Alaska Regional Office - NTSB case key (mKey): 98846 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC19CA010 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/98846/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=98846 - Page: https://openairdocs.org/ntsb/ANC19CA010 ## Probable cause The pilot’s selection of an unsuitable runway for landing, which resulted in a loss of control and runway excursion. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Piper PA-31-350, 9 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=7103110), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Runway/land/takeoff/taxi surface: snow/slush/ice covered surface](https://openairdocs.org/ntsb-findings/03023015): Environmental issues › Physical environment · Contributed to outcome (probable cause); cases with it: [Piper PA-31-350, 4 cases](https://openairdocs.org/ntsb-findings/03023015/cases.md?model=7103110), [All aircraft, 219 cases](https://openairdocs.org/ntsb-findings/03023015/cases.md) - [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Piper PA-31-350, 2 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=7103110), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Piper PA-31-350, 5 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=7103110), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Piper PA-31-350, 8 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=7103110), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Piper PA-31-350, 8 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=7103110), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Piper PA-31-350, 18 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=7103110), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The commercial pilot reported that he performed a fly over of the intended landing runway and determined that it was wet and muddy. During the landing roll, the braking action was minimal due to ice on the surface. The pilot determined that the airplane was not going to stop before the end of the runway, so he applied differential engine power to spin the airplane around; however, the airplane slid off the runway and impacted a snow berm resulting in the collapse of the left landing gear. The airplane sustained substantial damage to the left wing and left horizontal stabilizer. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N995AK](https://openairdocs.org/aircraft/N995AK), registered now, S/N 31-7752089, built 1977 (OpenAirDocs) - Reported make and model: Piper PA31 (350) - Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (registry code 7103110) (OpenAirDocs) - Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: 31-7752089 - Year built: 1977 - Airframe hours: 18237 - Engines: Lycoming TIO-540-J2BD 350 horsepower reciprocating; Lycoming LTIO-540-J2BD 350 hp reciprocating - Damage: Substantial damage - Flight: Other work use, Part 91 - Operator: Lake Clark Air Inc, doing business as Lake Clark Air - Registered owner: Lake Clark Air Inc - Airworthiness certificate: Standard, Normal - Last inspection: AAIP, January 7, 2019 - Departed: PAJC, Chignik, AK - Destination: Same as departure - Airport: KCL, Chignik Lagoon, runway 04, 2,200 × 90 ft, water - Equipment: Auto-pilot, Electronic primary flight display, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 28; injuries: none; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review January 6, 2019; seat: left; restraint: 3-point; flight hours: 2,259 total, 376 in this make and model, 2,063 as pilot in command, 166 in the last 90 days, 30 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 8 statute miles - Lowest ceiling: 2,000 ft broken - Temperature: 39 °F, dew point 37 °F - Altimeter: 2937.00 inHg - Observed at: PAJC, 6 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 (OpenAirDocs). - [Accident 20190121015549A](https://openairdocs.org/incident/20190121015549A), Jan 21, 2019: Piper PA-31-350, Chignik, AK, Substantial damage. Pilot was enroute from pajc to kcl. No awos/asos available. Pilot overflew kcl to identify runway conditions. Pilot picked runway 4 due to wind and terrain… ## Docket (2 files) The files NTSB released with the investigation on August 3, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=98846. 3.3 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12541899&FileExtension=pdf&FileName=point%20one_Redacted-Rel.pdf - Photographs (item 2, PDF, 2 pages, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11763832&FileExtension=pdf&FileName=Photo%20Template%20CA010-Rel.pdf From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.