CHI05LA071 · Twin Commander Acft. Corp. 680V
Twin Commander Acft. Corp. 680V · Accident: airframe, component or system failure on approach
From Fort Wayne International Airport (FWA) to General Wayne A. Downing Peoria International Airport (PIA)
Event
- NTSB case
- CHI05LA071
- 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
Twin Commander Acft. Corp. 680V
- Aircraft type
- Twin Commander 680
- 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
- N688TM
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Fort Wayne International Airport (FWA), Fort Wayne, INTo General Wayne A. Downing Peoria International Airport (PIA), Peoria, IL
- 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
- 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
- Airframe, component or system failure
- 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
- Landing gear, normal retraction/extension assembly › Malfunction
- Reason for occurrence undetermined
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The airplane sustained substantial damage when a main landing gear failed to fully extend during landing. The pilot could not get a gear down and locked indication at his destination and returned to the departure airport. Troubleshooting efforts were unsuccessful in getting the main gear extended and a landing with the main gear not fully extended was performed at the departure airport. On-scene and post accident examinations could not duplicate or determine the malfunction.
Probable cause
The malfunction of the landing gear extension assembly during approach for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI05LA071
- Event ID
- 20050218X00210
- Case number
- CHI05LA071
- 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, coordinates. 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: db4f8b096e69d0fd9425d561c180af89f32f5ee20844e4e1ec2dd4c6db22a8e2; retrieved 2026-09-22T06:16:52.862Z.