Mesa Airlines Beech 1900D incident
Beech 1900D · Incident: airframe, component or system failure on approach
From Mid Ohio Valley Regional Airport (PKB) to North Central West Virginia Airport (CKB)
Event
- NTSB case
- NYC97IA123
- 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
- Incident
- 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
- Airline
- 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
Beech 1900D
- Aircraft type
- Beechcraft 1900
- 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
- N165YV
- Operator
- Mesa Airlines
- Onboard fatalities
- Unknown
- Route
- From Mid Ohio Valley Regional Airport (PKB), Parkersburg, WVTo North Central West Virginia Airport (CKB)
- 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 121: Air Carrier
- 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
- Minor
Cause areas
- Flt control syst, wing flap control bearing › Separation
- Manufacturer › Maintenance, inspection, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot lowered the flaps to 35 degrees while on final approach to runway 21. He noted aileron binding as the flaps traveled to 35 degrees, and at the same time heard a snap under the floor of the cockpit. After landing the flaps were not retracted. The airplane was taxied to the terminal where it was observed that the right outboard flap panel had became detached from the flap aft roller bearings at the inboard flap track. The flap was in contact with the aileron, which interfered with aileron control. The manufacturer had published a Safety Communique during May 1997. The Communique dealt with the inspection of the outboard flap attachment brackets and aft roller bearings of Beech 1900 series airplanes. The incident airplane was scheduled to have the inspection complied with during the next 30 days. The airplane had accumulated about 3,317 flight hours and 7,069 landings. An inspection of the remainder of the operator's fleet of Beech 1900D airplanes revealed that eight additional airplanes failed the inspection criteria, but had not reached the assigned number of cycles specified in the Communique.
Probable cause
The right outboard flap detaching from the flap aft roller bearings, at the flap track, which was a result of the manufacturer's inadequate inspection program.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record NYC97IA123
- Event ID
- 20001208X08210
- Case number
- NYC97IA123
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (5)
- 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: 729d9c2f59a22b73182ed9877d4e01a24f91bbcc3e188d2cc28e8f610b0e6fba; retrieved 2026-09-18T17:30:46.996Z.
- The NTSB's operator name is blank for N165YV; the operator shown is the name the NTSB's other records give its FAA operator code, MASA.