# N11CS: 1947 Grumman G-21A, registration cancelled 1980-07-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 10, 1980
- Status when cancelled: Valid registration
- Airframe: [Grumman G-21A](https://openairdocs.org/model/grumman-g-21a) (registry code 3951204)
- Data sheets: [TCDS TC 654](https://openairdocs.org/tcds/TC%20654) (OpenAirDocs)
- Serial number: 1166
- Year built: 1947
- Type of aircraft: Fixed wing multi engine
- Certificate issued: February 25, 1977
- Mode S code: A02A1D
- Owner when cancelled: [Catalina Airlines Inc](https://openairdocs.org/faa-owner/CATALINA%20AIRLINES%20INC)
- Location: [Gardena, CA](https://openairdocs.org/faa-place/CA/Gardena)
- Owner type: Corporation
- Owner's area on the map: 33.9014° N, 118.3157° W: Placed by OpenAirDocs at the center of ZIP code 90249, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N11CS
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=11CS
- Page: https://openairdocs.org/deregistered/N11CS-1980-07-10

From the FAA registry file of October 28, 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 Grumman G-21A: https://openairdocs.org/model/grumman-g-21a.md

## NTSB investigations (4)

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 LAX79FA040](https://openairdocs.org/ntsb/LAX79FA040), Apr 14, 1979: Grumman G-21A (N11CS), Catalina Is, CA, destroyed, 1 fatal
- [NTSB LAX77FUA17](https://openairdocs.org/ntsb/LAX77FUA17), Jun 10, 1977: Grumman G-21A (N11CS), Catalina, CA, substantial damage
- [NTSB LAX72AL071](https://openairdocs.org/ntsb/LAX72AL071), Dec 12, 1971: Grumman G-21 (N11CS), Long Beach, CA, substantial damage
- [NTSB LAX72AL009](https://openairdocs.org/ntsb/LAX72AL009), Jul 30, 1971: Grumman G-21A (N11CS), Avalon, CA, substantial damage

## FAA accident and incident reports (2)

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 19790414017119A](https://openairdocs.org/incident/19790414017119A), Apr 14, 1979: Gruman G21 (N11CS), Avalon, CA, Destroyed, 1 fatal. Pilot attempting go around dug wing tip into water and crashed. Low fog over water.
- [Accident 19770610013249A](https://openairdocs.org/incident/19770610013249A), Jun 10, 1977: Gruman G21A (N11CS), Catalina, CA, Substantial damage. Right main ldg gear hit submerged piece of cement while taxying up ramp.

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