ATL90LA096 · Cessna 172A
Cessna 172A · Accident: total loss of engine power (non-mechanical) on approach
Event
- NTSB case
- ATL90LA096
- 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
Cessna 172A
- Aircraft type
- Cessna 172
- 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
- N7677T
- 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 go-around
- 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
- Total loss of engine power (non-mechanical)
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Fuel starvation
- 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
- Fluid, fuel › Starvation
- Fuel system, vent › Blocked(total)
- Pilot in command › Aircraft preflight, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
AS THE PILOT ADVANCED THE THROTTLE DURING A GO AROUND ATTEMPT, THE ENGINE LOST POWER. THE AIRPLANE WAS FORCE LANDED STRAIGHT AHEAD AND NOSED OVER. AN INSPECTION OF THE AIRPLANE REVEALED THAT A WASP HAD BUILT A MUD NEST ON THE LEFT WING IN THE AREA OF THE FUEL TANK VENT OPENING. THE VENT LINE WAS FOUND TO BE OBSTRUCTED BY DIRT. ALSO, THE RIGHT FUEL TANK FILLER CAP WOULD NOT VENT PROPERLY WHEN TESTED. AN INSPECTION OF THE ENGINE DID NOT REVEAL ANY EVIDENCE OF PRE-EXISTING MALFUNCTION OR FAILURE.
Probable cause
FUEL STARVATION TO THE ENGINE, INITIATED BY THE COMBINATION OF A BLOCKED FUEL TANK VENT LINE AND A MALFUNCTIONING FUEL FILLER CAP. A FACTOR IN THE ACCIDENT WAS THE PILOT'S INADEQUATE PREFLIGHT INSPECTION, IN THAT HE DID NOT DETECT THE FUEL VENT LINE BLOCKAGE.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ATL90LA096
- Event ID
- 20001212X22854
- Case number
- ATL90LA096
- 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: local date, investigation status. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1990-04-13.
- API snapshot SHA-256: c43bbcf46b82618aa51ebf8e3a2f15be51c7237b06b90a5c04a3d4a08a8d28c9; retrieved 2026-09-23T06:30:10.754Z.