# N9894: Sikorsky H-19D - Status: Valid registration - Airframe: [Sikorsky H-19D](https://openairdocs.org/model/sikorsky-h-19d) (registry code 8141610, 12 seats) - Data sheets: [TCDS HR1SO](https://openairdocs.org/tcds/HR1SO) (Orlando Helicopter Airways Inc.) (OpenAirDocs) - Serial number: 55998 - Type: Rotorcraft - Engine type: Reciprocating - Certificate issued: September 21, 2021 - Expires: September 30, 2028 - Mode S code: ADCF77 - Registered owner: [Sierra Aeronautics LLC](https://openairdocs.org/faa-owner/SIERRA%20AERONAUTICS%20LLC) - Location: [Franklin, KY](https://openairdocs.org/faa-place/KY/Franklin) - Owner type: LLC - Owner's area on the map: 36.7254° N, 86.5646° W: Placed by OpenAirDocs at the center of ZIP code 42134, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9894 - Page: https://openairdocs.org/aircraft/N9894 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): 2 in force ### Matched by airframe (Sikorsky H-19D) - [AD 75-04-02](https://openairdocs.org/ad/75-04-02): Main Rotor Spindles · Orlando Helicopter Airways CH-19E, H-19A, H-19D and 8 more. Effective Feb 19, 1975 - [AD 70-09-05](https://openairdocs.org/ad/70-09-05): Main Rotor Shaft · Orlando Helicopter Airways H-19D, H-19G, HRS-1/CH-19 and 1 more. Effective Apr 30, 1970 ## Information bulletins (advisory) None matched. ## NTSB investigations (2) 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 LAX91LA137](https://openairdocs.org/ntsb/LAX91LA137), Mar 19, 1991: Sikorsky H-19/S55 (N9894), Richvale, CA, substantial damage. Probable cause: THE FAILURE OF THE ENGINE'S NUMBER 4 CYLINDER INTAKE VALVE KEEPER. TREES UNDER THE HELICOPTER AT THE TIME OF THE LOSS OF ENGINE POWER WERE FACTORS IN THE ACCIDENT. - [NTSB OAK79DVG21](https://openairdocs.org/ntsb/OAK79DVG21), Mar 7, 1979: Sikorsky H-19D (N9894), Vina, CA, destroyed ## FAA accident and incident reports (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 19910318006639A](https://openairdocs.org/incident/19910318006639A), Mar 18, 1991: Orlhel H19DSKRSKY (N9894), Orland, CA, Substantial damage. Impacted trees on forced landing during a spray run. Intake valve keeper failed allowed intake valve remain open. - [Incident 19800403047439I](https://openairdocs.org/incident/19800403047439I), Apr 3, 1980: Orlhel H19ASKRSKY (N9894), Marysville, CA, Substantial damage. Pilot got out of idling helicopter. The craft rolled forward and down a drop-off. - [Accident 19790307004229A](https://openairdocs.org/incident/19790307004229A), Mar 7, 1979: Skrsky S55 (N9894), Vina, CA, Destroyed. Main rotor drive train failed just after lift off. Helicopter made hard landing. Bounced and rolled over. ## Service difficulty reports None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. ## STCs that may be installed (OpenAirDocs) (10) 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 (Sikorsky H-19D) - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SA01406NY](https://openairdocs.org/stc/SA01406NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and rotary wing. Airwolf Filter Corporation - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International - [STC SH1599SO](https://openairdocs.org/stc/SH1599SO): Removal of main transmission oil cooler blower and associated parts. Orlando Heli Airways Inc - [STC SH1072SO](https://openairdocs.org/stc/SH1072SO): Installation of dust boot retainer rings (in rotor head dampers). Orlando Heli Airways Inc ## Related - Other Sikorsky H-19D aircraft: https://openairdocs.org/model/sikorsky-h-19d/aircraft.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.