IAD02LA020 · Cessna 401A
Cessna 401A · Accident: fire en route
From 40N · Coatesville, PA to Tri-State Airport / Milton J. Ferguson Field (HTS)
Event
- NTSB case
- IAD02LA020
- 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
Cessna 401A
- Aircraft type
- Cessna 401
- 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
- N4062Q
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From 40N · Coatesville, PATo Tri-State Airport / Milton J. Ferguson Field (HTS), Huntington, WV
- 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
- Fire
- 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
- Fuel system, line › Cracked
- Owner/pilot mechanic › Maintenance, compliance with ad, not complied with
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
While in cruise flight, with the combustion heater turned on, the pilot heard an explosion. Smoke then entered the cabin, followed by a loss of electrical power. The pilot diverted and landed without incident. Examination of the airplane revealed that the combustion heater exhibited heat and fire damage. The fuel pump supply line that ran between the fuel pump and the heater was found cracked at the fuel pump housing inlet, and was loose. The fractured surfaces appeared dull, and displayed carbon build-up. Examination of the airplane's logbooks revealed that on December 1, 1993, the combustion heater had been removed, rebuilt, and then re-installed, at a total airplane time of 3,932.2 hours. Additionally, there were no logged entries which indicated that the 20-year old Airworthiness Directive that was issued to "prevent a hazardous condition caused by deterioration on the combustion heater", for this particular model heater had been complied with. The airplane underwent an annual inspection in September 2001, at a total airplane time of 5,213.5 hours. At the time of the accident, the airplane had accrued a total of 5,231.9 hours.
Probable cause
the owner/mechanic's failure to comply with an Airworthiness Directive, which resulted in a cracked fuel supply line and subsequent in-flight fire.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record IAD02LA020
- Event ID
- 20020104X00025
- Case number
- IAD02LA020
- 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: 92c861e19d623a241c0e9de3e5d3fb821a8eaf44ec09311097fc1f2c7d837764; retrieved 2026-09-22T11:14:52.915Z.