ATL93LA098 · Grumman AA5B
Grumman AA5B · Accident: partial loss of engine power (non-mechanical) during initial climb
Event
- NTSB case
- ATL93LA098
- 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
Grumman AA5B
- Aircraft type
- Grumman AA5
- 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
- N74092
- 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
- Initial climb
- 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
- Partial loss of engine power (non-mechanical)
- 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, carburetor › Ice
- Weather condition › Carburetor icing conditions
Not plotted · Location withheld: coordinates are missing, conflicting, invalid, or have no accepted acquisition method. No substitute location has been invented.
NTSB narrative
THE PILOT COMPLETED A PREFLIGHT INSPECTION AND RUNUP BEFORE ATTEMPTING THE TAKEOFF. THERE WERE NO AIRCRAFT PROBLEMS NOTED DURING THE PREFLIGHT, AND ALL SYSTEMS, INCLUDING THE CARBURETOR HEAT, OPERATED NORMALLY DURING THE SUBSEQUENT RUNUP PROCEDURE. ACCORDING TO THE PILOT, HE EXPERIENCED A GRADUAL LOSS OF ENGINE POWER DURING THE INITIAL TAKEOFF ATTEMPT FROM A 1500 FOOT LONG PRIVATE SOD AIRSTRIP. REALIZING THAT A SAFE CLIMB WAS NOT POSSIBLE, THE PILOT ABORTED THE TAKEOFF ATTEMPT AFTER THE AIRPLANE CLIMBED A FEW FEET. THE AIRPLANE SETTLED BACK ONTO THE RUNWAY AND ROLLED OFF THE DEPARTURE END OF RUNWAY 29. EXAMINATION OF THE WRECKAGE FAILED TO DISCLOSE A SYSTEM MALFUNCTION OR COMPONENT FAILURE. EXAMINATION OF WEATHER DATA REVEALED THAT CONDITIONS WERE FAVORABLE FOR THE FORMATION OF CARBURETOR ICE. THE PILOT DID NOT RECEIVE A WEATHER BRIEFING BEFORE THE TAKEOFF ATTEMPT.
Probable cause
THE LOSS OF ENGINE POWER RESULTING FROM THE FORMATION OF CARBURETOR ICE DURING THE GROUND OPERATION. A FACTOR WAS THE PILOT'S FAILURE TO OBTAIN A WEATHER BRIEFING.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ATL93LA098
- Event ID
- 20001211X12290
- Case number
- ATL93LA098
- 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: 789c1436706053e63aae6cfb3955ad1f2c5275cde5fe2fa4e80547939ab412a4; retrieved 2026-09-21T22:56:18.770Z.