# N2157C: 1983 NDN NDN-1T FIRECRACKER - Status: Valid registration - Airframe: [NDN NDN-1T FIRECRACKER](https://openairdocs.org/model/ndn-ndn-1t-firecracker) (registry code 6260102, 2 seats) - Engine: [Pratt & Whitney Canada PT6A-25](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-25) (registry code 52243) - Data sheets: [TCDS E4EA](https://openairdocs.org/tcds/E4EA) (Pratt & Whitney Canada Corp.) (OpenAirDocs) - Serial number: 005 - Year built: 1983 - Type: Fixed wing single engine - Engine type: Turbo-prop - Airworthiness: Experimental, research and development - Airworthiness date: September 2, 2017 - Certificate issued: May 25, 2023 - Expires: May 31, 2030 - Mode S code: A1CF65 - Registered owner: [National Test Pilot School](https://openairdocs.org/faa-owner/NATIONAL%20TEST%20PILOT%20SCHOOL) - Location: [Mojave, CA](https://openairdocs.org/faa-place/CA/Mojave) - Owner type: Corporation - Owner's area on the map: 35.0658° N, 118.2218° W: Placed by OpenAirDocs at the center of ZIP code 93501, 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=2157C - Page: https://openairdocs.org/aircraft/N2157C 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): 4 in force ### Matched by airframe (NDN NDN-1T FIRECRACKER) None in force. ### Matched by engine (Pratt & Whitney Canada PT6A-25) - [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 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 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 ## 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 N2157C. ## FAA accident and incident reports None matched to N2157C. ## Reports on N2157C not matched to an aircraft (1) They name N2157C, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [Incident 19790919023819I](https://openairdocs.org/incident/19790919023819I), Sep 19, 1979: Piper PA44180 (N2157C), St Paul, MN, Minor damage. Nose gear collapsed after touchdown. Drag brace bearings (pn 452-450) were elongated. ## 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) (14) 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 engine (Pratt & Whitney Canada PT6A-25) - [STC SE00010EN](https://openairdocs.org/stc/SE00010EN): Instructions for Continued Airworthiness for the PT6A-25, and, -25A engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. MORE Company Inc - [STC SE000010EN](https://openairdocs.org/stc/SE000010EN): Instructions for Continued Airworthiness for the PT6A-25 and PT6A-25A engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. MORE Company, Inc - [STC SE00014EN](https://openairdocs.org/stc/SE00014EN): Installation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models. Pratt & Whitney Engine Services Inc - [STC SE00020EN](https://openairdocs.org/stc/SE00020EN): Installation of the Pratt & Whitney Engine Services, Inc. TrendCheck/ TrendCheck Plus Engine Monitor Kit P/N TREND-K-010-1. Pratt & Whitney Engine Services Inc - [STC SE2960SO](https://openairdocs.org/stc/SE2960SO): Installation of an oil filler cap safety adapter. Jet Avion Corporation - [STC SE615GL](https://openairdocs.org/stc/SE615GL): Incorporation of a fuel flow transducer. Shadin Avionics - [STC SE01805NY](https://openairdocs.org/stc/SE01805NY): Installation of Fuel Nozzle Adapters using studs and nuts. Atlantic Turbines International Inc - [STC SE09257SC](https://openairdocs.org/stc/SE09257SC): Convert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration. Covington Aircraft Engines, Inc - [STC SE659NE](https://openairdocs.org/stc/SE659NE): Installation of oil tank filler neck check valve, P/N TSA-76A. Aviation Components Support - [STC SE1269EA](https://openairdocs.org/stc/SE1269EA): Stripping and recoating of compressor turbine blades, P/N 3023401, with Walbar Metals, Inc. Airwork Corporation - [STC SE386NE](https://openairdocs.org/stc/SE386NE): Installation of Turbo Products PMA parts. Audco Corporation - [STC SE5601SW](https://openairdocs.org/stc/SE5601SW): Replacement splined end and oil mist lubrication on accessory drive gearshaft. Aviall of Texas, Inc - [STC SE4607SW](https://openairdocs.org/stc/SE4607SW): Revise the starter-generator drive spline to provide lubrication with engine oil. Aviall of Texas, Inc - [STC SE4570SW](https://openairdocs.org/stc/SE4570SW): Revise accessory drive spline, P/N 3008181. Aviall of Texas, Inc ## Earlier aircraft with N2157C The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N2157C before. - [Cancelled 1970-06-17](https://openairdocs.org/deregistered/N2157C-1970-06-17): Cessna 195B, S/N 16142. Owner: [L Horbe William De](https://openairdocs.org/faa-owner/L%20HORBE%20WILLIAM%20DE), [Vandalia, OH](https://openairdocs.org/faa-place/OH/Vandalia) - [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N2157C-undated): Piper PA-44-180, S/N 447995121. N-number assigned, not yet registered ## Related - Other NDN NDN-1T FIRECRACKER aircraft: https://openairdocs.org/model/ndn-ndn-1t-firecracker/aircraft.md - The Pratt & Whitney Canada PT6A-25 engine: https://openairdocs.org/engine/pratt-whitney-canada-pt6a-25.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.