LAX99LA063 · Richard Young HARMON ROCKET II HARMON ROC
Richard Young HARMON ROCKET II HARMON ROC · Accident: fire on approach
Event
- NTSB case
- LAX99LA063
- 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
- 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
Richard Young HARMON ROCKET II HARMON ROC
- Aircraft type
- Richard Young HARMON ROCKET
- 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
- N288M
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From not recordedTo 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
- Approach · VFR pattern final
- 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
- Destroyed
Cause areas
- Fuel system, line fitting › Leak
- Fuel system, line fitting › Loose part/bolt/nut/clamp/etc
- Owner/builder › Maintenance, annual inspection, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Ground witnesses heard the engine make a 'pop' sound on downwind and observed flames coming from the rear cowl area. The passenger reported that he observed light haze of smoke in the cockpit on base leg, then flames and dark black smoke filled the cabin as the airplane turned onto final. The pilot landed hard and the airplane ground looped to a stop. The pilot had difficulty opening the canopy and sustained serious burns. The engine and components of the accessory section at the rear of the engine exhibited thermal damage in the left rear of the accessory section. The engine driven fuel pump displayed more damage than the other accessories. The aluminum housing of the engine driven fuel pump was melted and the center section of the pump had disintegrated. The top half of the pump remained securely attached to the engine. The bottom of the pump fell into the rubble. Molten metal remained on the lower portion of the pump piece that remained attached to the engine. The attachment fittings for the inlet and output fuel lines for the fuel pump were detached and lying in the engine compartment. The inlet line had globules of molten metal on the threads and around the fitting. The output fitting did not have any residue on it; the threads and fitting were clean and undamaged. The 'B' nut on the output fitting was 1 1/4 turns loose. The remaining fuel line 'B' nuts were secure. The fitting was an industrial hardware fitting rather than an aviation fitting, and did not show any evidence of fracture. After removal of the fire sleeve from the flexible fuel lines, no damage or chaffing of the braided material was evident. There was no evidence of any ruptures or other hose failures within the engine compartment. A condition (annual) inspection was completed 1 month 10 hours prior to the accident.
Probable cause
The owner's inadequate condition (annual) inspection, which failed to detect a loose fuel pump output line attachment fitting, which resulted in an in-flight fire. A factor in the hard landing and ground loop was the pilot's inability to see through the smoke filling the cockpit.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record LAX99LA063
- Event ID
- 20001211X11589
- Case number
- LAX99LA063
- 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: 268e6114949bc1ddc301c2f53e5000b44b4020a3a4394c4bb099e689b618a5ab; retrieved 2026-09-21T11:16:13.874Z.