ATL97FA021 · Bellanca 17-31ATC
Bellanca 17-31ATC · Accident: loss of engine power while maneuvering
From FZG to PBI · West Palm Beach, FL
Event
- NTSB case
- ATL97FA021
- 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
- 3 · 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
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Instrument Meteorological Cond
Bellanca 17-31ATC
- Aircraft type
- Bellanca 17
- 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
- N123SS
- Operator
- Albert J. Townsend · private individual
- Onboard fatalities
- Unknown
- Route
- From FZGTo PBI · West Palm Beach, FL
- 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
- Maneuvering
- 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
- Induction air control, alternate air/door › Failure
- Induction air control, intake manifold › Blocked(total)
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot could not recall the accident flight and there were no impact witnesses. He stated it was misting rain during loading & engine run-up. He also noted a weather front moving in from the north, and clear to the southeast. Relatives helped load the airplane, watched it depart, then drove to Florida. After an unknown elapsed time, an ear witness heard fluctuating engine sounds followed by an impact. He found the airplane south of runway 19. The airplane had impacted in a steep left wing & nose down attitude. Subsequent investigation revealed the intake air box alternate air door broken loose. A fresh fracture was evident on the door hinge. The spark plugs were sooted. The fuel injection system tested within limits.
Probable cause
A loss of engine power due to the blockage of the intake manifold of the induction air system, by the broken alternate air door, and the loss of aircraft control for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ATL97FA021
- Event ID
- 20001208X07128
- Case number
- ATL97FA021
- 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: 0b7ff0d0ce91ff0d63957fd94d6d06d3213093fb8dadd7afdf7f3c2329f50dfa; retrieved 2026-09-20T23:06:06.576Z.