WPR16LA078 · Boeing A75N1(PT17)
Boeing A75N1(PT17) · Accident: loss of engine power (partial) during takeoff
From Palm Springs International Airport (PSP) to Palm Springs International Airport (PSP)
Event
- NTSB case
- WPR16LA078
- 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
Boeing A75N1(PT17)
- Aircraft type
- Boeing A75
- 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
- N63555
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Palm Springs International Airport (PSP), Palm Springs, CATo Palm Springs International Airport (PSP), Palm Springs, CA
- Aircraft age
- About 70 years (built 1946)
- 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
- Takeoff
- 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
- Loss of engine power (partial)
- 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
- Aircraft › Aircraft systems
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The airline transport pilot reported that, shortly after takeoff on the local sightseeing flight, the engine experienced a partial loss of power about 400 ft above ground level. The pilot initiated a turn back to the airport and subsequently landed hard on the runway, substantially damaging the airplane.
During the postaccident engine examination, an obstruction was found in one end of the fuel hose between the gascolator to the carburetor. The firesleeve on the hose was removed, which revealed that the hose entered the fitting at a slight angle that was not visible with the firesleeve in place. To facilitate further examination, the hose was cut close to the obstruction. The inner surface of the hose appeared cut and curled into the hose near the fitting, consistent with the improper assembly of the hose and fitting. It is likely that the curled piece of hose acted as a flapper valve that either restricted or cut off fuel flow to the carburetor. The high demand for fuel during takeoff depleted the supply of fuel in the carburetor and resulted in the loss of power. Although maintenance log entries indicated that the last replacement of the fuel hoses occurred 49 years before the accident, given the condition of the hoses, it is likely that a subsequent replacement was performed but not documented.
Probable cause
Improper assembly of a fuel hose, which restricted the fuel supply to the carburetor and resulted in a loss of engine power during the initial climb after takeoff.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR16LA078
- Event ID
- 20160302X71038
- Case number
- WPR16LA078
- 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: 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: 8c39ac51d664a96d24445e97fe243f7444f479ac7b323e71dfada3e1bfdedbca; retrieved 2026-09-16T03:11:55.699Z.