CHI97LA210 · Cessna A188B
Cessna A188B · Accident: loss of engine power during initial climb
From Aitutaki Airport (AIT) to an unrecorded destination
Event
- NTSB case
- CHI97LA210
- 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 A188B
- Aircraft type
- Cessna 188
- 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
- N9746G
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Aitutaki Airport (AIT)To 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 137: Agricultural
- 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
- 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
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot said the airplane accelerated normally to climb speed during takeoff. At about 100 feet above ground level (AGL), he noticed that the manifold pressure was low. 'All other engine readings appeared normal. The engine rapidly lost power.' The pilot attempted to land in a hay field adjacent to the airport. During touchdown, the main gear dug into wet/soft ground, and the airplane nosed over. The pilot said, 'Engine power at touchdown was minimal to zero.' Examination of the airplane revealed no anomalies. The pilot said that he could not remember how the switches were configured for takeoff. A note in the Cessna A188B Owner's Manual under HOT WEATHER/HOT ENGINE START (300 Horsepower Engine) stated, 'During a restart after a brief shutdown in extremely hot weather, the presence of fuel vapor may require the auxiliary fuel pump to operate in the 'ON' position for up to 1 minute or more before the vapor is cleared sufficiently to obtain 8 to 10 gallons/hour for starting.' A paragraph in the Cessna A188B Owner's Manual under TAKE-OFF stated, 'With 300 horsepower engines, it is important that the auxiliary fuel pump be turned off for take-off. Otherwise, the mixture will be excessively rich, causing a serious loss in power.'
Probable cause
loss of engine power for undetermined reason(s). A factor relating to the accident was: the wet/soft terrain in the emergency landing area.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI97LA210
- Event ID
- 20001208X08325
- Case number
- CHI97LA210
- 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: 9b082b00d8a34588941c1ab9d6bf30bfcdf3cc458ccc24093b7419de2623d9f7; retrieved 2026-09-21T21:20:49.564Z.