# N628CK: 1966 Croman SH-3H - Status: Valid registration - Airframe: [Croman SH-3H](https://openairdocs.org/model/croman-sh-3h) (registry code 2490000, 4 seats) - Engine: [GE T58-GE-402](https://openairdocs.org/engine/ge-t58-ge-402) (registry code 30156) - Data sheets: [TCDS R00004SE](https://openairdocs.org/tcds/R00004SE) (Croman Corporation) (OpenAirDocs) - Serial number: 152707 - Year built: 1966 - Type: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Restricted, forest - Airworthiness date: February 15, 2023 - Certificate issued: November 30, 2016 - Expires: November 30, 2029 - Mode S code: A83431 - Registered owner: [Croman Corp](https://openairdocs.org/faa-owner/CROMAN%20CORP) - Location: [White City, OR](https://openairdocs.org/faa-place/OR/White%20City) - Owner type: Corporation - Owner's area on the map: 42.6128° N, 122.9275° W: Placed by OpenAirDocs at the center of ZIP code 97503, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=628CK - Page: https://openairdocs.org/aircraft/N628CK From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 3 in force ### Matched by airframe (Croman SH-3H) - [AD 2026-15-17](https://openairdocs.org/ad/2026-15-17): Main Rotor Gearbox · Glacier Helicopter CH-3E, S-61A, S-61D and 12 more. Effective Sep 10, 2026 - [AD 2026-11-05](https://openairdocs.org/ad/2026-11-05): Rotorcraft flight control; Rotorcraft servo system · Carson Helicopters S-61L, SH-3H, CH-3E and 11 more. Effective Jul 9, 2026 - [AD 2021-10-16](https://openairdocs.org/ad/2021-10-16): Engine/Transmission Coupling · Carson Helicopters S-61L, SH-3H, SH-3H and 6 more. Effective Jul 1, 2021 ### Matched by engine (GE T58-GE-402) None in force. ### Historical (superseded or no longer in force) - [AD 2015-20-12](https://openairdocs.org/ad/2015-20-12) (historical): Main Rotor Gearbox · Carson Helicopters SH-3H, SH-3H, CH-3E and 13 more. Effective Nov 24, 2015 ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N628CK. ## FAA accident and incident reports None matched to N628CK. ## Service difficulty reports (1) As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 2023FA0000416](https://openairdocs.org/sdr/2023FA0000416), Aug 12, 2023: TRANS RECTIFIER. FAILED. WHILE FLYING, A BURNING SMELL WAS OBSERVED AS WELL AS VISIBLE SMOKE COMING FROM THE E-BAY. A PRECAUTIONARY LANDING WAS PERFORMED AND IT WAS DETERMINED THAT THE ## Service difficulty reports on N628CK not matched to an aircraft (2) They name N628CK, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR 2011FA0000106](https://openairdocs.org/sdr/2011FA0000106), Feb 15, 2011: BEARING. BROKEN. CREW NOTICED A VIBRATION IN CRUISE. IDENTIFIED ELECTRICAL POWER LOSS IN RT STARTER/GENERATOR. I SOLATED STARTER/GENERATOR. NO FURTHER PROBLEMS EXPERIENCED DURIN - [SDR 2011FA0000073](https://openairdocs.org/sdr/2011FA0000073), Feb 8, 2011: LAMP. FAILED. RT RECOGNITION LAMP DISCOVERED FAILED DURING POST FLIGHT INSP. REPLACED LAMP AND DISCOVERED FAILED LAMP WAS DEFECTIVE. LAMP SOLDER JOINT FAILURE AT MOUNTING FLA ## STCs that may be installed (OpenAirDocs) (13) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the airframe (Croman SH-3H) - [STC SR01517SE](https://openairdocs.org/stc/SR01517SE): Fabrication and installation of an internal fire retardant tank. Croman Corporation - [STC SR01127SE](https://openairdocs.org/stc/SR01127SE): Modification of main rotor blade part number 61170-20201 in accordance with Master Drawing List RR 9633-08, Revision A, dated September 17, 2002, or later FAA approved revision. Retirement life for the modified main rotor blade, part number RR-61170-20201 is 21,200 total time in service. Park Technologies, LLC - [STC SR01051DE](https://openairdocs.org/stc/SR01051DE): Installation of Croman Corporation Electric Heater. Croman Corporation - [STC SR04401NY](https://openairdocs.org/stc/SR04401NY): Increase of Out of Ground Effect (OGE) Hover Performance. Carson Helicopters Inc - [STC SR04122NY](https://openairdocs.org/stc/SR04122NY): The Installation of Carson Helicopters, Inc. Composite Tail Rotor Blade and Pitch Sleeve, part number 428-600-1,. Carson Helicopters Inc - [STC SR02077SE](https://openairdocs.org/stc/SR02077SE): Installation of the Observer Seat CRCS100-01. Croman Corporation - [STC SR01755SE](https://openairdocs.org/stc/SR01755SE): Installation of the Main Rotor Head Modification. Croman Corporation - [STC SR01427SE](https://openairdocs.org/stc/SR01427SE): Installation of S-61L fixed main landing gear. Croman Corporation - [STC SR02267SE](https://openairdocs.org/stc/SR02267SE): Fabrication of replacement transmission fittings. Croman Corporation - [STC SH5125NM](https://openairdocs.org/stc/SH5125NM): Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints. Croman Corporation - [STC SR01426SE](https://openairdocs.org/stc/SR01426SE): Fabrication and installation of components for a left seat pilot-in-command operation. Croman Corporation - [STC SR02037SE](https://openairdocs.org/stc/SR02037SE): Fabrication and installation of improved pressure refueling shut-off system. Croman Corporation - [STC SR01288SE](https://openairdocs.org/stc/SR01288SE): Fabrication of Ag-Air Systems Model 36000 Auxiliary Hydraulic System. Kawak Aviation Technologies Inc ## Related - Other Croman SH-3H aircraft: https://openairdocs.org/model/croman-sh-3h/aircraft.md - The GE T58-GE-402 engine: https://openairdocs.org/engine/ge-t58-ge-402.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.