# N814SS: 2014 Viking Air DHC-6-400

- Status: Valid registration
- Airframe: [Viking Air DHC-6-400](https://openairdocs.org/model/viking-air-dhc-6-400) (registry code 9502640, 21 seats)
- Engine: [Pratt & Whitney PT6A-34 series](https://openairdocs.org/engine/pratt-whitney-pt6a-34-series) (registry code 52143)
- Data sheets: [TCDS A9EA](https://openairdocs.org/tcds/A9EA) (De Havilland Aircraft of Canada Limited) (OpenAirDocs)
- Serial number: 901
- Year built: 2014
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, normal
- Airworthiness date: August 19, 2014
- Certificate issued: August 18, 2014
- Expires: August 31, 2027
- Mode S code: AB19D9
- Registered owner: [Hilcorp Equipment LLC](https://openairdocs.org/faa-owner/HILCORP%20EQUIPMENT%20LLC)
- Location: [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage)
- Owner type: LLC
- Owner's area on the map: 62.0437° N, 158.1745° W: Placed by OpenAirDocs at the center of ZIP code 99503, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=814SS
- Page: https://openairdocs.org/aircraft/N814SS

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. The registry lists only the engine series, so ADs for every Pratt & Whitney PT6A-34 model are included.

## ADs that may apply (OpenAirDocs): 21 in force

### Matched by airframe (Viking Air DHC-6-400)

- [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023
- [AD 2022-11-12](https://openairdocs.org/ad/2022-11-12): Engine Controls · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jul 13, 2022
- [AD 2022-11-09](https://openairdocs.org/ad/2022-11-09): Wing Structure · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jul 6, 2022
- [AD 2022-10-07](https://openairdocs.org/ad/2022-10-07): Flight Control System · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jun 23, 2022
- [AD 2022-10-03](https://openairdocs.org/ad/2022-10-03): Flight Control System · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jun 23, 2022
- [AD 2022-07-14](https://openairdocs.org/ad/2022-07-14): Aircraft Fuel System · Viking Air DHC-6-400. Effective May 13, 2022
- [AD 2022-03-04](https://openairdocs.org/ad/2022-03-04): Time Limits · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Mar 17, 2022
- [AD 2019-10-05](https://openairdocs.org/ad/2019-10-05): Flight Controls · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Jun 20, 2019
- [AD 2018-04-02](https://openairdocs.org/ad/2018-04-02): Flight Controls · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 2 more. Effective Mar 27, 2018
- [AD 2012-26-15 R1](https://openairdocs.org/ad/2012-26-15-R1): Navigation · Agusta AW139, A318-111, A318-112 and 70 more. Effective Dec 3, 2014

### Matched by engine (Pratt & Whitney PT6A-34 series)

- [AD 2022-08-13](https://openairdocs.org/ad/2022-08-13): Turbine Section · Pratt & Whitney Canada PT6A-34, PT6A-34B, PT6A-34AG and 2 more. Effective May 27, 2022
- [AD 2014-11-05](https://openairdocs.org/ad/2014-11-05): Reinforcement liner to the power turbine (PT) containment   
  ring and, for certain PT containment rings, adding scallops · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 18 more. Effective Aug 5, 2014
- [AD 2011-25-12](https://openairdocs.org/ad/2011-25-12): Sun gear · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 4 more. Effective Dec 28, 2011
- [AD 2011-20-51](https://openairdocs.org/ad/2011-20-51): Gears · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 4 more. Effective Nov 1, 2011
- [AD 2002-23-13](https://openairdocs.org/ad/2002-23-13): Turbine Exhaust Ducts · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 20 more. Effective Dec 31, 2002
- [AD 97-04-12](https://openairdocs.org/ad/97-04-12): Compressor Bleed-off Valve · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 52 more. Effective Mar 14, 1997
- [AD 92-15-11](https://openairdocs.org/ad/92-15-11): Compressor Delivery Air Line (P3) Filter Assembly · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-21 and 7 more. Effective Aug 17, 1992
- [AD 90-12-05](https://openairdocs.org/ad/90-12-05): Engine Overhaul · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 3 more. Effective May 30, 1990
- [AD 80-08-12](https://openairdocs.org/ad/80-08-12): Fuel Pump Drive Coupling Splines · Pratt & Whitney Canada PT6A-11, PT6A-112, PT6A-135 and 24 more. Effective Apr 18, 1980
- [AD 75-06-01](https://openairdocs.org/ad/75-06-01): Gearbox Deterioration · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 11 more. Effective Apr 1, 1977
- [AD 75-11-04](https://openairdocs.org/ad/75-11-04): Reduction Gearbox Engine Distress · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 8 more. Effective May 20, 1975

### Historical (superseded or no longer in force)

- [AD 2012-26-15](https://openairdocs.org/ad/2012-26-15) (historical): Navigation · Agusta AW139, A318-111, A318-112 and 71 more. Effective Jan 24, 2013

## Information bulletins (advisory) (1 in force)

- [SAIB NE-12-04](https://openairdocs.org/saib/NE-12-04): Turbine/ Turboprop Engine: Reduction Gearbox. Issued Nov 1, 2011

## NTSB investigations

None matched to N814SS.

## FAA accident and incident reports

None matched to N814SS.

## Service difficulty reports (3)

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 2026FA0000824](https://openairdocs.org/sdr/2026FA0000824), Oct 8, 2026: TRIM TAB. FAULTED. AILERON TRIM INDICATION, AILERON TRIM TAB POSITION INDICATION. INTERMITTENT ERRATIC FLICKERING OF THE AILERON TRIM INDICATION. SYMPTOM APPEARS RANDOMLY, UNRELAT
- [SDR G7HA202307130001](https://openairdocs.org/sdr/G7HA202307130001), Jul 13, 2023: DISTRIBUTION VLV. BURNED. ON TEN OCCASIONS SINCE 2020, PILOTS REPORTED THE UNCOMMANDED INFLATION OF ALL THEIR DEICE BOOTS AT ONCE DURING TAKE-OFF. ON EVERY OCCASION, THEY WERE ABLE TO RE
- [SDR 2018FA0000202](https://openairdocs.org/sdr/2018FA0000202), Jun 27, 2018: FASTENER. LOOSE. DURING INSPECTION, FOUND LOOSENING JO-BOLTS ATTACHING THE RT AND LT FLANGES OF THE CENTER ELEVATOR HINGE BRACKET WHERE THE BRACKET FLANGES ATTACH TO THE AFT HOR

## STCs that may be installed (OpenAirDocs) (106, first 50)

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 (Viking Air DHC-6-400)

- [STC SA1841NM](https://openairdocs.org/stc/SA1841NM): Installation of larger windows and the lowering of the seats. Twin Otter STC Holdings, LLC
- [STC SA12430IB](https://openairdocs.org/stc/SA12430IB): Installation of the Garmin G1000 NXi Integrated Flight Deck System. Aerocorp Avionics Solutions Inc
- [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC
- [STC SA943EA](https://openairdocs.org/stc/SA943EA): Replacement of de Havilland wing bleed air ducting with alternate ducting. Texas Air Services Inc
- [STC SA03749NY](https://openairdocs.org/stc/SA03749NY): Installation of Garmin G950 Integrated Flight Deck System. Aerocorp Avionic Solutions Inc
- [STC SA12101IB](https://openairdocs.org/stc/SA12101IB): Installation of Cabin Interior Upgrade. De Havilland Aircraft of Canada Limited
- [STC SA00887LA](https://openairdocs.org/stc/SA00887LA): Installation of Pitot Heater Fail Lights. Team J.A.S
- [STC SA02556LA](https://openairdocs.org/stc/SA02556LA): Installation of Passenger Utility Seats. Team J.A.S
- [STC SA02649LA](https://openairdocs.org/stc/SA02649LA): Installation of Max-Viz 2300 Enhanced Vision System. Team J.A.S
- [STC SA02730LA](https://openairdocs.org/stc/SA02730LA): Installation of High-Flow 250 AMP Starter-Generators. Team J.A.S
- [STC SA02806LA](https://openairdocs.org/stc/SA02806LA): Structural Provisions for AFT Camera Hatch. Team J.A.S
- [STC SA04046CH PAGE 2](https://openairdocs.org/stc/SA04046CH%20PAGE%202): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc
- [STC SA09887AC](https://openairdocs.org/stc/SA09887AC): Installation of an Avionica MK-III mini Quick Access Recorder (QAR) and optional 4G or LTE Avionica Cellular Module (avCM. Aircraft Systems and Manufacturing Inc
- [STC SA39CH](https://openairdocs.org/stc/SA39CH): Installation of an Amphibian Landing Gear Position Advisory System/Laser Gear Advisory System. Wipaire Inc
- [STC SA02386AK](https://openairdocs.org/stc/SA02386AK): Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems. AeroLED's Holding LLC
- [STC SA00345BO](https://openairdocs.org/stc/SA00345BO): Installation of an NVIS / NVG Compatible Lighting System. ATI Engineering Services LLC
- [STC SA00196IB](https://openairdocs.org/stc/SA00196IB): Installation of the Replacement Aluminum Cargo Floor Panels. Rocky Mountain Aircraft
- [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc
- [STC SA00157IB](https://openairdocs.org/stc/SA00157IB): Installation of the Cabin Audio System Upgrade. Unity Aviation Canada Ltd
- [STC SA00085IB](https://openairdocs.org/stc/SA00085IB): Installation of Elevator Replacement Trailing Edge. Rocky Mountain Aircraft
- [STC SA02010WI](https://openairdocs.org/stc/SA02010WI): Installation of the Mid-Continent Instruments & Avionics MD23 FLEX Custom Function Display (CFD). Mid-Continent Instruments and Avionics
- [STC SA00076IB](https://openairdocs.org/stc/SA00076IB): Installation of Photo luminescent Safety Systems. STG AEROSPACE GERMANY GmbH
- [STC SA04482CH](https://openairdocs.org/stc/SA04482CH): INSTALL TELEDYNE FLIR INC STAR SAFIRE 380-HDc FLIR IMAGING SYSTEM WITH LASER RANGE FINDER (LRF). MAG AEROSPACE
- [STC SA04550AT](https://openairdocs.org/stc/SA04550AT): Main Wheel and Brake Assembly for the Viking Air DHC-6 Series aircraft. PMA Design and Manufacturing
- [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC
- [STC SA04701NY](https://openairdocs.org/stc/SA04701NY): Replacement of Fixed Wing Control Cables. Thunder Bay Aviation Ltd
- [STC SA04698NY](https://openairdocs.org/stc/SA04698NY): Approval of an Controlled Aircraft Equipment Configuration providing for the authorized use of Transmitting Portable Electronic Devices (TPED). Kilroy Aviation LLC
- [STC SA00282NY](https://openairdocs.org/stc/SA00282NY): Replacement latches on upper and lower cargo door. PMA Design & Manufacturing Inc
- [STC SA04587NY](https://openairdocs.org/stc/SA04587NY): Installation of Acorn Welding C6SC1107-NG Exhaust stacks. Acorn Welding Ltd
- [STC SA09856AC](https://openairdocs.org/stc/SA09856AC): Installation of BendixKing Aerowave 100 In-flight Data Link System for non-essential, non-required aircraft Cabin Systems & Equipments. Honeywell International Inc (Bendix King)
- [STC SA04651NY](https://openairdocs.org/stc/SA04651NY): Aft Lavatory Installation. Viking Air Limited
- [STC SA02265SE](https://openairdocs.org/stc/SA02265SE): Installation of a camera housing. Airborne Sensor LLC
- [STC SA09894AC](https://openairdocs.org/stc/SA09894AC): Installation of Night Vision Goggle (NVG) compatible lighting system in Viking Air Limited Model DHC-6-300 modified. Aero Dynamix Inc
- [STC SA04623NY](https://openairdocs.org/stc/SA04623NY): Installation of Type 1 (PAA Design group) DHC-6 Twin Otter Seats. Regent Aircraft Services
- [STC SA04595NY](https://openairdocs.org/stc/SA04595NY): Installation of STC-AT-141. AIRBORNE TECHNOLOGIES GmbH
- [STC SA04575NY](https://openairdocs.org/stc/SA04575NY): Installation of IKHANA Station 332 Bulkhead Door. IKHANA Aircraft Canada Inc
- [STC SA04284NY](https://openairdocs.org/stc/SA04284NY): Installation of the K-A Band Antenna and system provisions. airplus engineering GmbH
- [STC SA04565NY](https://openairdocs.org/stc/SA04565NY): Installation of the Replacement Cabin Roof Escape Hatch. Rocky Mountain Aircraft
- [STC SA02267LA](https://openairdocs.org/stc/SA02267LA): Approves the Viking Air Limited DHC-6-300 and DHC-6-400 landplanes to take off and land at a maximum weight of 14,000 pounds and DHC-6-300 and DHC-6-400 floatplanes to take off and land at a maximum weight of 13,600 pounds. IKHANA Group Inc
- [STC SA02627LA](https://openairdocs.org/stc/SA02627LA): Installation of wing hardpoints. IKHANA Group Inc
- [STC SA04486CH](https://openairdocs.org/stc/SA04486CH): EMS conversion in accordance with Spectrum Aeromed Master Drawing List 6080DL, Revision: 1 (One), dated September 22, 2020, or later FAA approved revisions. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SA04514NY](https://openairdocs.org/stc/SA04514NY): Single/Dual Transponder System ADS-B Upgrade. Scandinavian Avionics Design ApS
- [STC SA04444CH](https://openairdocs.org/stc/SA04444CH): Installation of Forward-Looking Infrared Radar (FLIR) System Provisions in accordance with MAG Aerospace Master Data List, Doc. No. 2020006-MDL-100, Revision F, dated June 23, 2020. MAG Aerospace
- [STC SA04437NY](https://openairdocs.org/stc/SA04437NY): Installation of the VIP Club Seating. IKHANA Aircraft Canada Inc
- [STC SA01452CH](https://openairdocs.org/stc/SA01452CH): Installation of an air ambulance conversion kit. Med-Pac Inc
- [STC SA04458AT](https://openairdocs.org/stc/SA04458AT): Installation of the PMA Design and Manufacturing nose landing gear (NLG) shock strut assembly. PMA Design & Manufacturing Inc
- [STC SA03768NY](https://openairdocs.org/stc/SA03768NY): Installation of Enhanced Air Conditioning System. IKHANA Aircraft Canada Inc
- [STC SA00344BO PAGE 2](https://openairdocs.org/stc/SA00344BO%20PAGE%202): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SA03266NY](https://openairdocs.org/stc/SA03266NY): Installation of a Cockpit (crew) Oxygen System. IKHANA Aircraft Canada Inc
- [STC SA00355BO](https://openairdocs.org/stc/SA00355BO): Installation of a Ballistic Protection System. MAG Aerospace

All 106: https://openairdocs.org/aircraft/N814SS/stcs.md

## Earlier aircraft with N814SS

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N814SS before.

- [Cancelled 2008-10-21](https://openairdocs.org/deregistered/N814SS-2008-10-21): Swearingen SA-226T, S/N T314, built 1979. Exported to Canada. Owner: [La Adventure Inc](https://openairdocs.org/faa-owner/LA%20ADVENTURE%20INC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)

## Related

- Other Viking Air DHC-6-400 aircraft: https://openairdocs.org/model/viking-air-dhc-6-400/aircraft.md
- The Pratt & Whitney PT6A-34 series engine: https://openairdocs.org/engine/pratt-whitney-pt6a-34-series.md

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