# NTSB WPR21LA190: Piper PA-18-105 Special, N7296K, Coeur d' Alene, ID, May 11, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: May 11, 2021, 11:15 local (18:15 UTC) - Place: Coeur d' Alene, ID · On airport - Coordinates: 47.767845, -116.81933 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=47.7678&lon=-116.8193&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: 2 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - Parties: FAA - NTSB case key (mKey): 103068 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA190 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103068/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103068 - Page: https://openairdocs.org/ntsb/WPR21LA190 ## Probable cause The student pilot’s failure to maintain directional control during the landing roll, and the flight instructors delayed remedial action which resulted in a runway excursion and collision with terrain. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Piper PA-18-105 SPECIAL, 5 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=7101808), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [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-18-105 SPECIAL, 4 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=7101808), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Attention/monitoring: monitoring other person](https://openairdocs.org/ntsb-findings/02021535): Personnel issues › Psychological · Instructor/check pilot (probable cause); cases with it: [Piper PA-18-105 SPECIAL, 1 case](https://openairdocs.org/ntsb-findings/02021535/cases.md?model=7101808), [All aircraft, 200 cases](https://openairdocs.org/ntsb-findings/02021535/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Instructor/check pilot; cases with it: [Piper PA-18-105 SPECIAL, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=7101808), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/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-18-105 SPECIAL, 5 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=7101808), [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-18-105 SPECIAL, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=7101808), [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-18-105 SPECIAL, 4 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=7101808), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The flight instructor of the tailwheel equipped airplane reported that, during a 3-point landing, with the student pilot at the flight controls, during the landing roll, the airplane veered left and exited the runway. The flight instructor applied full brakes to no avail. The airplane struck a berm, collapsed the left main landing gear and the left wing was substantially damaged when it impacted the surface. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N7296K](https://openairdocs.org/aircraft/N7296K), registered now, S/N 18-210 (OpenAirDocs) - Reported make and model: PIPER PA-18-105 SPECIAL - Registry model: [Piper PA-18-105 SPECIAL](https://openairdocs.org/model/piper-pa-18-105-special) (registry code 7101808) (OpenAirDocs) - Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: 18-210 - Year built: 1950 - Airframe hours: 2335 - Engines: Lycoming O-320-A2B 150 hp reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 1, 2021, 30 hours before - Departed: ID05, Coeur d' Alene, ID - Destination: COE, Couer d' Alene, ID - Airport: COE, Coeur d' Alene-Pappy Boyington Field, runway 20, 5,400 × 75 ft, asphalt - Equipment: Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; injuries: none; flight instructor, commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review December 11, 2020; seat: rear; restraint: lap only; flight hours: 3,395 total, 1,166 in this make and model, 3,332 as pilot in command, 44 in the last 90 days, 12 in the last 30 days, 4 in the last 24 hours - Student pilot; age 22; injuries: none; student; medical: class 3, without waivers/limitations; seat: front; restraint: 4-point; flight hours: 60 total, 4 in this make and model, 31 as pilot in command, 4 in the last 90 days, 4 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 60° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 63 °F, dew point 36 °F - Altimeter: 30.17 inHg - Observed at: KCOE - METAR: KCOE 111756Z AUTO 06004KT 10SM CLR 17/02 A3017 RMK AO2 SLP232 T01670017 10167 20033 58004 ## 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 20210511008319A](https://openairdocs.org/incident/20210511008319A), May 11, 2021: Piper PA-18-105 SPECIAL, Coeur D' Alene, ID, Substantial damage. During an instructional flight the student pilot conducted a wheel landing. When the student applied the heel brakes during the rollout, the airplane veered… ## Docket (3 files) The files NTSB released with the investigation on August 10, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103068. 2.6 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 2.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12567685&FileExtension=pdf&FileName=NTSB%20Form%206120_1%20WPR21LA190_Redacted-Rel.pdf - Pilot's statement (item 2, PDF, 1 page, 117 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12310560&FileExtension=pdf&FileName=Memo%20for%20Record%20Student%20Pilot-Rel.pdf - Photos (item 3, PDF, 1 page, 211 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12555300&FileExtension=pdf&FileName=WPR21LA190%20Photos-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.