US Airways Express Flight 4519
Beech 1900D · Incident: wheels up landing
From Washington Dulles International Airport (IAD) to Frederick Douglass Greater Rochester International Airport (ROC)
Event
- NTSB case
- NYC00IA150
- 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
- N853CA
- Operator
- US Airways Express
- Onboard fatalities
- Unknown
- Route
- From Washington Dulles International Airport (IAD), DULLES, VATo Frederick Douglass Greater Rochester International Airport (ROC)
- 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
- Landing
- 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
- Wheels up landing
- 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
- Company maintenance personnel › Maintenance, installation, improper
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
When the landing gear handle was selected to the down position in preparation for landing, the landing gear would not extend electrically. The flightcrew executed an abnormal checklist, which included utilizing a mechanical hydraulic pump; however, the landing gear remained retracted. The flightcrew elected to land the airplane with the gear retracted. Examination of the landing gear system revealed that maintenance personnel had improperly installed the landing gear service valve 6 days prior, by reversing two hydraulic lines. Reasons for the electrical malfunction of the landing gear service valve could not be determined. The airplane's maintenance manual did not refer to the cycling of the landing gear, mechanically or electrically, after replacement of the landing gear service valve.
Probable cause
The reversal of landing gear hydraulic lines by company maintenance personnel. Factors related to the incident were the manufacturers omission of maintenance procedures, and the failure of an electrical switch for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record NYC00IA150
- Event ID
- 20001212X21299
- Case number
- NYC00IA150
- 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: d91c771fb008958a0b60f3d9b4144acd48f36a14d740333841e0687d69e80461; retrieved 2026-09-18T16:35:21.984Z.
- The NTSB's operator name is blank for N853CA; the operator shown is the name the NTSB records it doing business as.