DEN03LA069 · Piper PA-18-150
Piper PA-18-150 · Accident: loss of control on ground/water during landing
From Rawlins Municipal Airport/Harvey Field (RWL) to Boise Air Terminal/Gowen Field (BOI)
Event
- NTSB case
- DEN03LA069
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Piper PA-18-150
- Aircraft type
- Piper PA-18
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N40520
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Rawlins Municipal Airport/Harvey Field (RWL), Rawlings, WYTo Boise Air Terminal/Gowen Field (BOI), Boise, ID
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Landing · landing roll
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of control on ground/water
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Compensation for wind conditions, inadequate
- Pilot in command › Directional control, not maintained
- Pilot in command › Ground loop/swerve, encountered
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot stated that while en route, she received ASOS weather updates. Approximately 30 minutes before landing, reported winds at the airport were 160 degrees at 6 knots. Approximately 10 nautical miles out, an update indicated that the winds were 120 degrees at 3 knots. During the landing roll on runway 16, the pilot encountered a gust of wind. The pilot attempted to regain control, but the airplane swerved to the right and departed the right side of the runway. The airplane's left main landing gear struck a ditch and the left wing tip struck the ground.
Probable cause
the pilot's failure to maintain directional control and his inadequate compensation for wind during the landing roll which resulted in a ground loop/swerve and impact with terrain. Contributing factors include the wind gust and the ditch.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN03LA069
- Event ID
- 20030424X00561
- Case number
- DEN03LA069
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: eeecf0624ae1afff41635835ef8446c49bebc4fc8aea46d0ca9ae209b204e300; retrieved 2026-09-22T09:22:17.860Z.