# NTSB ANC23LA028: Maule M-5-235C, N5644W, Palmer, AK, April 4, 2023 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: April 4, 2023, 09:00 local (17:00 UTC) - Place: Palmer, AK - Coordinates: 61.599631, -149.24824 - Nearby events: https://openairdocs.org/map.md?lat=61.5996&lon=-149.2482&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) - 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 - Parties: FAA - NTSB case key (mKey): 107018 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC23LA028 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/107018/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=107018 - Page: https://openairdocs.org/ntsb/ANC23LA028 ## Probable cause The pilot's delayed decision to execute a go-around maneuver while landing with excess airspeed into a short strip, which resulted in a runway overrun and subsequent loss of control. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Maule M-5-235C, 2 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=5460135), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Maule M-5-235C, 11 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=5460135), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Maule M-5-235C, 7 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=5460135), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/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: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Maule M-5-235C, 18 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=5460135), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that, while landing on the 1,300 ft. long, gravel-covered runway, he inadvertently touched down with excess airspeed and did not have enough braking action to stop the airplane. The airplane subsequently impacted a snow berm at the end of the airstrip and nosed over which resulted in substantial damage to the left-wing struts. The pilot stated that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N5644W](https://openairdocs.org/aircraft/N5644W), registered now, S/N 7350C, built 1980 (OpenAirDocs) - Reported make and model: MAULE M-5-235C - Registry model: [Maule M-5-235C](https://openairdocs.org/model/maule-m-5-235c) (registry code 5460135) (OpenAirDocs) - Registry engine: [Lycoming IO-540 series](https://openairdocs.org/engine/lycoming-io-540-series) (registry code 41530, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 7350C - Year built: 1980 - Airframe hours: 2664 - Engines: LYCOMING IO-540 SER 235 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 9, 2021, 24 hours before - Departed: LHD, Anchorage, AK - Destination: Same as departure - Airport: 14AK, Wick Air, runway 36, 1,300 × 80 ft, gravel - Equipment: Stall warning system, Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 79; injuries: none; commercial; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: basicmed, without waivers/limitations; last flight review March 3, 2016; seat: left; restraint: 3-point; flight hours: 3,518 total, 2,000 in this make and model, 3,518 as pilot in command, 0 in the last 90 days, 0 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 340° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: 7,000 ft broken - Temperature: 34 °F, dew point 18 °F - Altimeter: 29.83 inHg - Observed at: PAAQ, 4 nm away - METAR: PAAQ 041653Z 34008KT 10SM BKN070 OVC095 01/M08 A2983 RMK AO2 SLP105 T00061083 ## 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 20230404003929A](https://openairdocs.org/incident/20230404003929A), Apr 4, 2023: Maule M-5-235C, Wasilla, AK, Substantial damage. On the morning of April 4, 2023, the pilot departed lake hood strip (lhd) for wick air (14AK) to deliver his Maule for an annual inspection. During the… ## Other investigations on N5644W (1) 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. - [NTSB ANC89LA139](https://openairdocs.org/ntsb/ANC89LA139), Aug 10, 1989: Maule M-5 (N5644W), Nebesna Glacier, AK, substantial damage. Probable cause: THE PILOT ALLOWED THE AIRCRAFT TO INADVERTENTLY TOUCH DOWN, HE DELAYED MAKING A GO-AROUND, AND HE DID NOT MAINTAIN SUFFICIENT SPEED TO CONTINUE THE GO-AROUND. CONTRIBUTING FACTORS WERE: THE PILOT'S… ## Docket (2 files) The files NTSB released with the investigation on July 27, 2023, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=107018. 3.8 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 7 pages, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=15335326&FileExtension=pdf&FileName=ANC23LA028%206120_Redacted-Rel.pdf - Investigative photographs (item 2, PDF, 3 pages, 2.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=15335271&FileExtension=pdf&FileName=ANC23LA028%20Photographs-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.