FTW89GA156 · Piper PA-18-150
Piper PA-18-150 · Accident: loss of engine power en route
From Louisiana State Police Troop B Helipad Heliport (LA12) to an unrecorded destination
Narrative check · The NTSB narrative appears to contradict this record's departure or destination, injuries and operation. Values are shown as recorded, not corrected; compare with the narrative.
Event
- NTSB case
- FTW89GA156
- 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
- 0
- 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 Possible conflict
- 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
- N4423Z
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route Possible conflict
- From Louisiana State Police Troop B Helipad Heliport (LA12), GRAND CHENIER, LATo not recorded
- 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
- En route · cruise
- 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 engine power
- 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
No findings designated as a cause are recorded in the NTSB data yet.
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
ON AUGUST 30, 1989, AT 1225 CDT, A PIPER PA-18-150, N4423Z,BEING OPERATED BY AND CONDUCTING AN AERIAL SURVEY FORLOUISIANA WILDLIFE AND FISHERIES COMMISSION AS A PUBLICAIRCRAFT, FLIPPED FORWARD TO THE INVERTED POSITION DURING AFORCED LANDING 15 MILES EAST-NORTHEAST OF GRAND CHENIER,LOUISIANA, FOLLOWING A LOSS OF ENGINE POWER. VISUALMETEOROLOGICAL CONDITIONS PREVAILED, AND A FLIGHT PLAN HADNOT BEEN FILED. THE AIRPLANE WAS SUBSTANTIALLY DAMAGED, BUTNEITHER THE PRIVATE PILOT OR HIS PASSENGER WERE INJURED.THE AIRPLANE DEPARTED THE NUNEZ, LOUISIANA, AIRSTRIP (L12)ON AUGUST 30, 1989, AT 1210 CDT, FOR THIS LOCAL 14 CFR PART91 FLIGHT.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record FTW89GA156
- Event ID
- 20001213X29119
- Case number
- FTW89GA156
- 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: c4f9f4738500b2d8137d698e31f213046cae197426a12d7ec08a4d8797376da6; retrieved 2026-09-22T00:03:26.307Z.