# NTSB WPR22LA272: Piper PA-60-601P, N601NG, Scappoose, WA, July 13, 2022

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: July 12, 2022, 17:45 local (Jul 13, 2022, 00:45 UTC)
- Place: Scappoose, WA
- Coordinates: 45.771028, -122.86183 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.7710&lon=-122.8618&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095)
- 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: Western Pacific Region
- Parties: FAA
- NTSB case key (mKey): 105587
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR22LA272
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/105587/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=105587
- Page: https://openairdocs.org/ntsb/WPR22LA272

## Probable cause

The pilot’s failure to extend the landing gear before landing. Contributing to the accident was the pilot’s failure to utilize a prelanding checklist.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Action: forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Piper PA-60-601P, 1 case](https://openairdocs.org/ntsb-findings/02041035/cases.md?model=7106016), [All aircraft, 440 cases](https://openairdocs.org/ntsb-findings/02041035/cases.md)
- [Use of equip/info: use of checklist](https://openairdocs.org/ntsb-findings/02063030): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Piper PA-60-601P, 1 case](https://openairdocs.org/ntsb-findings/02063030/cases.md?model=7106016), [All aircraft, 336 cases](https://openairdocs.org/ntsb-findings/02063030/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095) (defining event); cases with it: [Piper PA-60-601P, 1 case](https://openairdocs.org/ntsb-events/095/sequence.md?model=7106016), [All aircraft, 584 cases](https://openairdocs.org/ntsb-events/095/sequence.md)

## Analysis

The pilot reported that, he was a little behind the airplane because of the short duration of the flight and he did not use a prelanding checklist to verify that the landing gear was extended before touchdown. The bottom of the fuselage was substantially damaged during the gear up landing. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N601NG](https://openairdocs.org/aircraft/N601NG), registered now, S/N 61P07908063402, built 1980 (OpenAirDocs)
- Reported make and model: PIPER AIRCRAFT CORPORATION PA-60-601P
- Registry model: [Piper PA-60-601P](https://openairdocs.org/model/piper-pa-60-601p) (registry code 7106016) (OpenAirDocs)
- Registry engine: [Lycoming IO-540 series](https://openairdocs.org/engine/lycoming-io-540-series) (registry code 41530, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 61P07908063402
- Year built: 1980
- Airframe hours: 5014
- Engines: Lycoming IO-540-S1A5 350 horsepower reciprocating; Lycoming IO-540-S1A5 350 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Metro West Ambulance
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 15, 2021
- Departed: HIO, Hillsboro, OR
- Destination: Same as departure
- Airport: SPB, Scappoose, runway 33, 5,100 × 100 ft, asphalt
- Equipment: Onboard weather, ADS-B, Auto-pilot, Electronic multifunction display

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land, multi-engine sea, single-engine sea; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review August 31, 2021; seat: left; restraint: 3-point; flight hours: 2,307 total, 860 in this make and model, 2,052 as pilot in command, 6 in the last 90 days, 1 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 9 knots, gusting 17
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point 59 °F
- Altimeter: 29.84 inHg
- Observed at: KSPB
- METAR: KSPB 130053Z AUTO 31009G17KT 10SM -RA CLR 29/15 A2984 RMK AO2 SLP105 P0000 T02890150

## 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 20220712012469A](https://openairdocs.org/incident/20220712012469A), Jul 12, 2022: Piper Aircraft Corporation PA-60-601P, Scappoose, OR, Substantial damage. On July 12, 2022, about 1901 pacific daylight time, an Aerostar, [privacy data omitted] sustained substantial damage when it landed gear up at the Scappoose…

## Docket (2 files)

The files NTSB released with the investigation on August 30, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=105587. 3.5 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 2.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14297716&FileExtension=pdf&FileName=NTSB%20From%206120_Redacted-Rel.pdf
- Accident pictures (item 2, PDF, 2 pages, 645 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14298055&FileExtension=pdf&FileName=WPR22LA272%20Accident%20Pictures-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.

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