WPR20FAMS1 · Piper PA28R 180
Piper PA28R 180 · Accident
From Shelter Cove Airport (0Q5) to Marin County Airport - Gnoss Field (DVO)
Event
- NTSB case
- WPR20FAMS1
- 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
- 2 · 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 PA28R 180
- Aircraft type
- Piper PA28
- 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
- N4958J
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Shelter Cove Airport (0Q5), Shelter Cove, CATo Marin County Airport - Gnoss Field (DVO), Novato, CA
- Aircraft age
- About 51 years (built 1968)
- 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
- Unknown
- Defining eventThe 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
- Unknown or undetermined
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Environmental issues › Conditions/weather/phenomena
- Not determined › Not determined
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
A witness reported that the pilot and passenger departed in dark night conditions with no visible horizon. After takeoff, the airplane made a left turn. Flight track data first identified the airplane about 2.8 nautical miles southeast of the departure airport and over the ocean. The airplane was at an indicated altitude of about 3,325 ft mean sea level (msl) and was transmitting a beacon code of 1200. The airplane maneuvered and made a right 360o turn followed by a left 360o turn, then reversed course, conducted a figure-eight turn, and headed south-southeast bound. It gradually climbed to about 6,000 ft msl before entering a left descending turn and rapidly losing altitude. The track data indicated that the airplane descended from about 5,800 ft to 2,850 ft msl in the last 24 seconds of recorded track data. A search for the airplane found no debris, and the airplane remains missing. The flight track data are consistent with a loss of airplane control.
Probable cause
Undetermined due to lack of available evidence.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR20FAMS1
- Event ID
- 20191125X21347
- Case number
- WPR20FAMS1
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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: local date, investigation status, cause areas. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 2019-10-25.
- API snapshot SHA-256: 4d308415e813b91c835e0d1ef869b2be4519c78c838daa762357b11a46a06e45; retrieved 2026-09-15T07:08:41.247Z.