# N504US: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 1
- Last cancelled: May 31, 2017
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=504US
- Page: https://openairdocs.org/aircraft/N504US

## Aircraft that carried N504US

- [Cancelled 2017-05-31](https://openairdocs.org/deregistered/N504US-2017-05-31): Boeing 757-251, S/N 23193, built 1987. Registration expired, pending cancellation. Owner: [Aircraft Solutions A320 LLC](https://openairdocs.org/faa-owner/AIRCRAFT%20SOLUTIONS%20A320%20LLC), [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis)

## NTSB investigations on N504US (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB NYC03CA169](https://openairdocs.org/ntsb/NYC03CA169), Jul 22, 2003: Boeing 757-251 (N504US), Wadsworth, OH, no damage. Probable cause: An in-flight encounter with turbulence.

## FAA accident and incident reports on N504US (3)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20030722019949A](https://openairdocs.org/incident/20030722019949A), Jul 22, 2003: Boeing 757251 (N504US), Cleveland, OH. (-23) On July 22, 2003 nwa flt 1142 was climbing through FL290, hit unexpected and unreported code 4 clear air turbulence for approx. 30 seconds. Lead f/a…
- [Incident 19870215010389I](https://openairdocs.org/incident/19870215010389I), Feb 15, 1987: Boeing 757251 (N504US), Memphis, TN. Unable to maintain stable cabin pressure after takeoff. Returned and replaced a pressure regulator.
- [Incident 19870101004929I](https://openairdocs.org/incident/19870101004929I), Jan 1, 1987: Boeing 757251 (N504US), Omaha, NE. Diverted after smoke detector light came on in midship lavatory. Found a faulty indicator light.

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