# N9937K: 1976 Bell 212, registration cancelled 2006-09-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 14, 2006
- Exported to: Canada
- Status when cancelled: Triennial form not returned
- Airframe: [Bell 212](https://openairdocs.org/model/bell-212) (registry code 1181420)
- Engine: [U/A Canada PT6B-9](https://openairdocs.org/engine/u-a-canada-pt6b-9) (registry code 61503)
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW), [TCDS E4EA](https://openairdocs.org/tcds/E4EA) (OpenAirDocs)
- Serial number: 30778
- Year built: 1976
- Type of aircraft: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, transport
- Airworthiness date: May 12, 1976
- Certificate issued: August 2, 1994
- Last registry action: August 15, 2006
- Mode S code: ADE11F
- Owner when cancelled: [Houston Helicopters Inc](https://openairdocs.org/faa-owner/HOUSTON%20HELICOPTERS%20INC)
- Location: [Pearland, TX](https://openairdocs.org/faa-place/TX/Pearland)
- Owner type: Corporation
- Owner's area on the map: 29.5636° N, 95.2860° W: Placed by OpenAirDocs: center of Pearland, TX, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9937K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9937K
- Page: https://openairdocs.org/deregistered/N9937K-2006-09-14

From the FAA registry file of November 5, 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 Bell 212: https://openairdocs.org/model/bell-212.md

## Service difficulty reports (4)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR GUR2001F00001](https://openairdocs.org/sdr/GUR2001F00001), Oct 21, 2001: PITCH HORN. OUT OF TOLERANCE. DURING INSPECTION OF THE MAIN ROTOR GRIP PITCH HORN TO GRIP COUNTER BORES, MEASURED THE BORES USING A TELESCOPING GAUGE AND MICROMETER.
- [SDR GUR2001F00000](https://openairdocs.org/sdr/GUR2001F00000), Oct 21, 2001: PITCH HORN. OUT OF TOLERANCE. DURING INSPECTION OF THE MAIN ROTOR GRIP PITCH HORN TO GRIP COUNTER BORES, MEASURED THE BORES USING A TELESCOPING GAUGE AND MICROMETER.
- [SDR 99ZZZX2490](https://openairdocs.org/sdr/99ZZZX2490), Jun 10, 1999: BLADE. DISBONDED. DURING DAILY INSPECTION, FOUND VOID AT UPPER AND LOWER SECTION OF TRIM TAB TRAILING EDGE. AIRCRAFT TT: 4,967.8 HOURS. M/R BLADE REMOVED AND SENT FOR REPAIR.
- [SDR 99ZZZX2491](https://openairdocs.org/sdr/99ZZZX2491), May 29, 1999: BLADE. DISBONDED. AIRCRAFT HAD VERTICAL VIBRATION ON SHORT FINAL TO LAND. INSPECTED AIRCRAFT, FOUND LOWER TRIM TAB HAD DISBONDED ON M/R BLADE PN 212-015-501-5, SN A262. AFTER CLO

## 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 LAX90T#A07](https://openairdocs.org/ntsb/LAX90T%23A07), Aug 31, 1990: Bell 212 (N9937K), Yosemite, CA, substantial damage

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