# NTSB GAA17CA392: Piper PA22, N6936B, Berlin, NH, July 5, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 5, 2017, 12:55 local (16:55 UTC) - Place: Berlin, NH - Coordinates: 44.577499, -71.177497 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.5775&lon=-71.1775&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 22, 2017 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 95518 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA392 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95518/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=95518 - Page: https://openairdocs.org/ntsb/GAA17CA392 ## Probable cause The pilot’s failure to maintain directional control during the landing roll. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Piper PA-22-150, 38 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=7102210), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Piper PA-22-150, 52 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=7102210), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Object/animal/substance: runway/taxi/approach light](https://openairdocs.org/ntsb-findings/03022012): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Piper PA-22-150, 2 cases](https://openairdocs.org/ntsb-findings/03022012/cases.md?model=7102210), [All aircraft, 106 cases](https://openairdocs.org/ntsb-findings/03022012/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Piper PA-22-150, 48 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=7102210), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Piper PA-22-150, 19 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=7102210), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Piper PA-22-150, 12 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=7102210), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Piper PA-22-150, 41 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=7102210), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Piper PA-22-150, 15 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=7102210), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot of the tailwheel-equipped airplane reported that, during the landing roll, the airplane veered to the left off the runway. He added that he applied full power and "managed to maneuver the plane out of the ground loop but started taking out runway lights" as he maneuvered the airplane back toward the runway. The airplane impacted a runway light and two taxiway signs, damaging the main landing gear. The airplane then "flew over the runway," landed, and the main landing gear collapsed. The airplane sustained substantial damage to the fuselage and left wing lift struts. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Factual narrative The pilot of the tailwheel-equipped airplane reported that, during the landing roll, the airplane veered to the left off the runway. He added that he applied full power and "managed to maneuver the plane out of the ground loop but started taking out runway lights" as he maneuvered the airplane back toward the runway. The airplane impacted a runway light and two taxiway signs, damaging the main landing gear. The airplane then "flew over the runway", landed, and the main landing gear collapsed. The airplane sustained substantial damage to the fuselage and left wing lift struts. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N6936B](https://openairdocs.org/deregistered/N6936B-2020-08-06), registration cancelled 2020-08-06, S/N 22-4215, built 1956 (OpenAirDocs) - Reported make and model: PIPER PA22 (150) - Registry model: [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150) (registry code 7102210) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 22-4215 - Year built: 1957 - Airframe hours: 2660 - Engines: LYCOMING O-320 SERIES 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 1, 2016 - Departed: 5B1, ISLAND POND, VT - Destination: BML, Berlin, NH - Airport: BML, Berlin Rgnl, runway 36, 5,200 × 100 ft, asphalt - Equipment: Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, waiver time limited special; last flight review August 13, 2016; seat: left; restraint: 3-point; flight hours: 1,239 total, 346 in this make and model, 1,212 as pilot in command, 4 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 79 °F, dew point 43 °F - Altimeter: 30.21 inHg - Observed at: KBML ## 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 20170705012439A](https://openairdocs.org/incident/20170705012439A), Jul 5, 2017: Piper PA-22-150, Milan, NH, Substantial damage. I interviewed [privacy data omitted] on 7/7/17 at the Berlin airport. He stated that the approach speed for this aircraft was 80 mph. He further stated that he… ## Other investigations on N6936B (2) 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 ERA18FA232](https://openairdocs.org/ntsb/ERA18FA232), Aug 25, 2018: Piper PA22 (N6936B), Island Pond, VT, substantial damage, 1 fatal. Probable cause: The pilot's exceedance of the airplane's critical angle of attack while maneuvering for landing, which resulted in an aerodynamic stall. - [NTSB MKC68F0458](https://openairdocs.org/ntsb/MKC68F0458), Feb 7, 1968: Piper PA-22 (N6936B), Minot, ND, substantial damage ## Docket (2 files) The files NTSB released with the investigation on August 30, 2017, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=95518. 4.3 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 4.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40455689&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photo (item 2, .PDF, 219 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40455690&FileExtension=.PDF&FileName=Accident%20Photo-Master.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.