# N181LL: Beech B90, registration cancelled 1991-04-09

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 9, 1991
- Status when cancelled: Triennial form not returned
- Airframe: [Beech B90](https://openairdocs.org/model/beech-b90) (registry code 1152912)
- Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20) (OpenAirDocs)
- Serial number: LJ440
- Type of aircraft: Fixed wing multi engine
- Certificate issued: October 21, 1986
- Last registry action: January 31, 1991
- Mode S code: A14568
- Owners when cancelled: [Critical Care Services Inc DBA](https://openairdocs.org/faa-owner/CRITICAL%20CARE%20SERVICES%20INC%20DBA), [Life Link III](https://openairdocs.org/faa-owner/LIFE%20LINK%20III)
- Location: [St Paul, MN](https://openairdocs.org/faa-place/MN/St%20Paul)
- Owner type: Corporation
- Owner's area on the map: 44.9311° N, 93.0792° W: Placed by OpenAirDocs at the center of ZIP code 55107, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N181LL
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=181LL
- Page: https://openairdocs.org/deregistered/N181LL-1991-04-09

From the FAA registry file of November 3, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Beech B90: https://openairdocs.org/model/beech-b90.md

## NTSB investigations (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 CHI88FA091](https://openairdocs.org/ntsb/CHI88FA091), Apr 5, 1988: Beech B90 (N181LL), St. Paul, MN, substantial damage. Probable cause: MECHANICAL FAILURE AND STICKING OF THE PILOTS THUMB OPERATED TRIM SWITCH CAUSING NOSE DOWN PITCH COMMAND. THE FAILURE OF THE CABIN HEATER AND THE LOW CABIN TEMPERATURE ARE CONTRIBUTING FACTORS.

## FAA accident and incident reports (1)

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 19880405069699A](https://openairdocs.org/incident/19880405069699A), Apr 5, 1988: Beech B90 (N181LL), St Paul, MN, Substantial damage. Uncommanded pitchover. Regained control after dive damaged airframe.

## Other aircraft with N181LL

- [Registered now](https://openairdocs.org/aircraft/N181LL): Shearer William Joseph AVID MARK IV, S/N 1300B, built 1996

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