# N72RA: 1981 Embraer EMB-110P1 - Status: Valid registration - Airframe: [Embraer EMB-110P1](https://openairdocs.org/model/embraer-emb-110p1) (registry code 3260122, 20 seats) - Engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52032) - Data sheets: [TCDS A21SO](https://openairdocs.org/tcds/A21SO) (Embraer S.A.) (OpenAirDocs) - Serial number: 110.377 - Year built: 1981 - Type: Fixed wing multi engine - Engine type: Turbo-prop - Airworthiness: Standard, normal - Airworthiness date: May 31, 1994 - Certificate issued: July 28, 2014 - Expires: July 31, 2027 - Mode S code: A9A2AB - Registered owner: [Royal Air Freight Inc](https://openairdocs.org/faa-owner/ROYAL%20AIR%20FREIGHT%20INC) - Location: [Waterford, MI](https://openairdocs.org/faa-place/MI/Waterford) - Owner type: Corporation - Owner's area on the map: 42.6383° N, 83.4107° W: Placed by OpenAirDocs at the center of ZIP code 48327, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=72RA - Page: https://openairdocs.org/aircraft/N72RA 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 model are included. ## ADs that may apply (OpenAirDocs): 59 in force ### Matched by airframe (Embraer EMB-110P1) - [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 2014-20-05](https://openairdocs.org/ad/2014-20-05): Flight Controls · Embraer EMB-110P1 and EMB-110P2. Effective Oct 27, 2014 - [AD 2008-23-12](https://openairdocs.org/ad/2008-23-12): Wings-to-fuselage attachments · Embraer EMB-110P1 and EMB-110P2. Effective Dec 22, 2008 - [AD 2005-19-02](https://openairdocs.org/ad/2005-19-02): Nose landing gear (NLG) · Embraer EMB-110P1 and EMB-110P2. Effective Oct 19, 2005 - [AD 2005-18-20](https://openairdocs.org/ad/2005-18-20): "FASTprop" propeller de-icers · Hartzell PHC-C3YF-1RF/F8468A(B,K)-8R constant speed propeller (STC SA00718LA or 17 others). Effective Oct 14, 2005 - [AD 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 2005 - [AD 2000-02-27](https://openairdocs.org/ad/2000-02-27): Airframe Pneumatic Deicing Boots · Embraer EMB-110P1 and EMB-110P2. Effective Mar 24, 2000 - [AD 98-01-10](https://openairdocs.org/ad/98-01-10): MLG Wheel Axle/ Piston Tube Assembly · Embraer EMB-110P1 and EMB-110P2. Effective Feb 9, 1998 - [AD 97-26-13](https://openairdocs.org/ad/97-26-13): AFM - Limitation Section - Power Levers · Embraer EMB-110P1 and EMB-110P2. Effective Jan 28, 1998 - [AD 97-01-12](https://openairdocs.org/ad/97-01-12): Ground Proximity Warning System · Airtell International Ground Proximity Warning System, Mystere-Falcon 200, EMB-110P1 and 20 more. Effective Feb 25, 1997 - [AD 96-09-12](https://openairdocs.org/ad/96-09-12): AFM - Icing · Embraer EMB-110P1 and EMB-110P2. Effective Jun 11, 1996 - [AD 92-17-02](https://openairdocs.org/ad/92-17-02): Rudder Trim Tab Actuating System · Embraer EMB-110P1 and EMB-110P2. Effective Sep 11, 1992 - [AD 91-25-11](https://openairdocs.org/ad/91-25-11): Rudder Trim Tab System · Embraer EMB-110P1 and EMB-110P2. Effective Feb 10, 1992 - [AD 91-25-09](https://openairdocs.org/ad/91-25-09): Elevator Trim Tab Actuator Support · Embraer EMB-110P1 and EMB-110P2. Effective Dec 23, 1991 - [AD 90-12-01](https://openairdocs.org/ad/90-12-01): Elevator Balance Weight Arms · Embraer EMB-110P1 and EMB-110P2. Effective Oct 15, 1990 - [AD 89-20-11](https://openairdocs.org/ad/89-20-11): AFM Change - Emergency Exit · Embraer EMB-110P1 and EMB-110P2. Effective Oct 24, 1989 - [AD 88-25-10](https://openairdocs.org/ad/88-25-10): Flap Control Switch · Embraer EMB-110P1 and EMB-110P2. Effective Jan 5, 1989 - [AD 87-13-08](https://openairdocs.org/ad/87-13-08): Airplane Flight Manual/Pilot's Operating Handbook Changes · Embraer EMB-110P1 and EMB-110P2. Effective Aug 6, 1987 - [AD 87-01-05](https://openairdocs.org/ad/87-01-05): Bearings - Flight Control Systems · Embraer EMB-110P1 and EMB-110P2. Effective Jan 22, 1987 - [AD 85-17-04](https://openairdocs.org/ad/85-17-04): Elevator Control Rod Tube · Embraer EMB-110P1 and EMB-110P2. Effective Aug 30, 1985 - [AD 85-01-51](https://openairdocs.org/ad/85-01-51): Empennage Assembly · Embraer EMB-110P1 and EMB-110P2. Effective Feb 26, 1985 - [AD 84-24-53 R1](https://openairdocs.org/ad/84-24-53-R1): Empennage Assembly · Embraer EMB-110P1 and EMB-110P2. Effective Jan 17, 1985 - [AD 82-05-01 R2](https://openairdocs.org/ad/82-05-01-R2): Wing Flap Actuators · Embraer EMB-110P1 and EMB-110P2. Effective Oct 26, 1983 - [AD 83-15-10](https://openairdocs.org/ad/83-15-10): Control Surface Balance · Embraer EMB-110P1 and EMB-110P2. Effective Aug 9, 1983 - [AD 83-14-09](https://openairdocs.org/ad/83-14-09): Rivet Attachments · Embraer EMB-110P1 and EMB-110P2. Effective Jul 27, 1983 - [AD 83-04-03 R1](https://openairdocs.org/ad/83-04-03-R1): Control Wheel Failure · Embraer EMB-110P1 and EMB-110P2. Effective Apr 25, 1983 - [AD 79-04-03 R2](https://openairdocs.org/ad/79-04-03-R2): Landing Gear · Embraer EMB-110P1 and EMB-110P2. Effective Feb 7, 1983 - [AD 82-27-09](https://openairdocs.org/ad/82-27-09): Primary Flight Control Cables · Embraer EMB-110P1 and EMB-110P2. Effective Jan 10, 1983 - [AD 82-20-02](https://openairdocs.org/ad/82-20-02): Icing Conditions · Embraer EMB-110P1 and EMB-110P2. Effective Sep 30, 1982 - [AD 82-18-01](https://openairdocs.org/ad/82-18-01): Water In Fuel Tank · Embraer EMB-110P1 and EMB-110P2. Effective Sep 27, 1982 - [AD 81-14-01](https://openairdocs.org/ad/81-14-01): Rudder Upper Hinge Support · Embraer EMB-110P1 and EMB-110P2. Effective Jul 1, 1981 - [AD 79-10-11](https://openairdocs.org/ad/79-10-11): Flight Control Rods · Embraer EMB-110P1 and EMB-110P2. Effective Dec 19, 1979 - [AD 79-24-05](https://openairdocs.org/ad/79-24-05): Wing Flap Supports · Embraer EMB-110P1 and EMB-110P2. Effective Nov 21, 1979 ### Matched by engine (Pratt & Whitney PT6A series) - [AD 2024-04-51](https://openairdocs.org/ad/2024-04-51): Turbine Section · Pratt & Whitney Canada PT6A-64, PT6A-66, PT6A-66A and 17 more. Effective Mar 28, 2024 - [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 2016-05-13](https://openairdocs.org/ad/2016-05-13): Corrosion and perforation of the two-ply Cu-Be bellows in Woodward FCUs. · Pratt & Whitney Canada PT6A-60AG, PT6A-65AG, PT6A-67AF and 1 more. Effective Apr 22, 2016 - [AD 2014-17-08 R1](https://openairdocs.org/ad/2014-17-08-R1): Compressor turbine (CT) blades · Pratt & Whitney Canada PT6A-114 and PT6A-114A. Effective Jun 5, 2015 - [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 2012-09-10](https://openairdocs.org/ad/2012-09-10): First stage sun gears · Pratt & Whitney Canada PT6A-110, PT6A-112, PT6A-114 and 12 more. Effective May 23, 2012 - [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 2004-25-18](https://openairdocs.org/ad/2004-25-18): Propeller governor assemblies · Pratt & Whitney Canada PT6A-60A and PT6A-65B. Effective Jan 18, 2005 - [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 2001-20-01](https://openairdocs.org/ad/2001-20-01): Compressor Bleed Valve Assembly · Pratt & Whitney Canada PT6A-114A and PT6A-25C. Effective Nov 5, 2001 - [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 95-13-08](https://openairdocs.org/ad/95-13-08): Compressor Turbine Disk · Pratt & Whitney Canada PT6A-67D. Effective Jul 12, 1995 - [AD 93-23-06](https://openairdocs.org/ad/93-23-06): Airframe Chip Detector Flag System · Pratt & Whitney Canada PT6A-50. Effective Jan 26, 1994 - [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 86-10-05](https://openairdocs.org/ad/86-10-05): First Stage Compressor Hub · Pratt & Whitney Canada PT6A-42. Effective Jun 5, 1986 - [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 80-04-02](https://openairdocs.org/ad/80-04-02): Push-Pull Control Terminal · Pratt & Whitney Canada PT6A-20, PT6A-6A, PT6A-6B and 1 more. Effective Feb 8, 1980 - [AD 78-17-07](https://openairdocs.org/ad/78-17-07): Fuel Control Unit · Pratt & Whitney Canada PT6A-38, PT6A-41 and PT6A-45A. Effective Aug 31, 1978 - [AD 78-12-04](https://openairdocs.org/ad/78-12-04): No. 2 Bearing Pressure Oil Transfer Tube Assembly · Pratt & Whitney Canada PT6A-38, PT6A-41 and PT6A-45A. Effective Jun 19, 1978 - [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 - [AD 70-16-01](https://openairdocs.org/ad/70-16-01): Turbo Propeller Governors · Pratt & Whitney Canada PT6A-11, PT6A-11AG, PT6A-15AG and 5 more. Effective Aug 4, 1970 - [AD 69-23-06](https://openairdocs.org/ad/69-23-06): Fuel Pumps · Pratt & Whitney Canada PT6A-20, PT6A-27, PT6A-28 and 4 more. Effective Nov 15, 1969 - [AD 68-05-03](https://openairdocs.org/ad/68-05-03): Reverse Mode · Pratt & Whitney Canada PT6A-20 and PT6A-6B. Effective Feb 28, 1968 ### Historical (superseded or no longer in force) - [AD 2014-17-08](https://openairdocs.org/ad/2014-17-08) (historical): Compressor turbine (CT) blades · Pratt & Whitney Canada PT6A-114 and PT6A-114A. Effective Oct 8, 2014 - [AD 88-24-02](https://openairdocs.org/ad/88-24-02) (historical): Airframe Chip Detector Flag System · Pratt & Whitney Canada PT6A-50 ## Information bulletins (advisory) (5 in force) - [SAIB NE-15-21](https://openairdocs.org/saib/NE-15-21): Fuel Injector Nozzle. Issued Aug 19, 2015 - [SAIB NE-12-04](https://openairdocs.org/saib/NE-12-04): Turbine/ Turboprop Engine: Reduction Gearbox. Issued Nov 1, 2011 - [SAIB NE-10-47](https://openairdocs.org/saib/NE-10-47): Turbine Engine Compressor Section. Issued Aug 30, 2010 - [SAIB NE-06-34](https://openairdocs.org/saib/NE-06-34): . Issued Mar 21, 2006 - [SAIB CE-03-24](https://openairdocs.org/saib/CE-03-24): . Issued Feb 19, 2003 ## NTSB investigations None matched to N72RA. ## FAA accident and incident reports None matched to N72RA. ## 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) (133, 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 (Embraer EMB-110P1) - [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc - [STC SA00039BO](https://openairdocs.org/stc/SA00039BO): Incorporation of cockpit panel modifications to support single pilot operations without an autopilot. Ameriflight LLC - [STC SA00132BO](https://openairdocs.org/stc/SA00132BO): Removal of right side windshield heating element. Ameriflight LLC - [STC SA00405BO](https://openairdocs.org/stc/SA00405BO): De-modification of SFAR 41A compliance. Ameriflight LLC - [STC SA00517NY](https://openairdocs.org/stc/SA00517NY): Modification of air conditioning system. Ameriflight LLC - [STC SA01184AT](https://openairdocs.org/stc/SA01184AT): Remove passenger windows and overwing exits and replace with plugs. Modify airstair steps. Ameriflight LLC - [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc - [STC SA814GL](https://openairdocs.org/stc/SA814GL): Installation of nose wheel. Kaman Corporation Aircraft Wheel and Brake LLC - [STC SA02075SE](https://openairdocs.org/stc/SA02075SE): Installation of a Mid-Continent MD835( ) Lithium Ion Battery. Mid-Continent Instrument Co. Inc - [STC SA04514NY](https://openairdocs.org/stc/SA04514NY): Single/Dual Transponder System ADS-B Upgrade. Scandinavian Avionics Design ApS - [STC SA01714WI](https://openairdocs.org/stc/SA01714WI): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. Garmin International Inc - [STC SA04330NY](https://openairdocs.org/stc/SA04330NY): Installation of Pitot Heat Failure Warning System. Kenn Borek Air Limited - [STC SA04165NY](https://openairdocs.org/stc/SA04165NY): Installation of Latitude Technologies Skynode S200 Satcom system must be performed. Latitude Technologies Corporation - [STC SA01933LA-D](https://openairdocs.org/stc/SA01933LA-D): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc - [STC SA03973NY](https://openairdocs.org/stc/SA03973NY): Replacement of existing TCAS 7.0 by TCAS 7.1. Scandinavian Avionics Design ApS - [STC SA00382BO](https://openairdocs.org/stc/SA00382BO): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes. Avidyne Corporation - [STC SA00343BO](https://openairdocs.org/stc/SA00343BO): Installation of a single configuration or a dual configuration Avidyne Corporation Integrated Flight Display, Model IFD540 loaded with Release 10.0 software (or later FAA approved release). Avidyne Corporation - [STC SA00352BO PAGE 1](https://openairdocs.org/stc/SA00352BO%20PAGE%201): Installation of an Avidyne Corporation Mode A/C/S Transponder with ADS-B Out capability, Model AXP340 loaded with Version 3.13 software (or later FAA approved version),. Avidyne Corporation - [STC SA01229SE PAGE 1](https://openairdocs.org/stc/SA01229SE%20PAGE%201): Installation of GNS 480 (CNX80) GPS WAAS Navigator with integrated VHF Navigation and Communication radios. Garmin International Inc - [STC SA01933LA-D PAGE 1](https://openairdocs.org/stc/SA01933LA-D%20PAGE%201): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc - [STC SA02121SE](https://openairdocs.org/stc/SA02121SE): Installation of Garmin GTS 825 (TAS) or GTS 855 (TCAS I) Traffic System. Garmin International Inc - [STC SA1330GL](https://openairdocs.org/stc/SA1330GL): Revert to Normal Category (14 CFR 23) aircraft vice SFAR 41A by modifying the aircraft. American Eagle Airlines, Inc - [STC SA01692SE](https://openairdocs.org/stc/SA01692SE): Installation of a Garmin GMX 200 Multi-Function Display. Garmin International Inc - [STC SA03148NY](https://openairdocs.org/stc/SA03148NY): The installation of the Latitude Technologies Corporation S100 Tracking System. Latitude Technologies Corporation - [STC SA01487SE-D](https://openairdocs.org/stc/SA01487SE-D): Installation of a GDL 69 or GDL 69A XM Satellite Receiver. Garmin International Inc - [STC SA00243BO](https://openairdocs.org/stc/SA00243BO): Installation of Centurion Consulting, Inc. GPS Steering Assist Module (SAM) with roll steering (p/n 0025-5100), or without roll steering (p/n 0025-5200). Icarus Avionics, LLC - [STC SA178NE](https://openairdocs.org/stc/SA178NE): Remove existing starter-generator and install Aircraft Parts starter generator. Skurka Aerospace Inc - [STC ST02540AT-D](https://openairdocs.org/stc/ST02540AT-D): Installation of replacement fuel tank sealant system. FFC Manufacturing - [STC SA01473SE](https://openairdocs.org/stc/SA01473SE): Installation of a GTX 32 (mode C), GTX 33 (mode S), or GTX 33D (mode S with diversity) Remote Transponde. Garmin AT Inc - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc - [STC SA01695SE](https://openairdocs.org/stc/SA01695SE): Installation of an antenna. Garmin AT Inc - [STC SP00400SE](https://openairdocs.org/stc/SP00400SE): Installation of various propeller electrical de-icer models. SMR Technologies - [STC ST01468CH](https://openairdocs.org/stc/ST01468CH): Installation of various SMR Technologies electrical propeller deicer models. SMR Technologies - [STC SA01046CH](https://openairdocs.org/stc/SA01046CH): Installation of SMR Technologies engine inlet anti-icer models. SMR Technologies Inc - [STC SA01487SE](https://openairdocs.org/stc/SA01487SE): Installation of a GDL 69 or GDL 69A XM Satellite Receiver in accordance with Garmin Supplemental Type Certificate Master Data List, P/N 005-C0217-00, Revision A, dated December 20, 2004, or later FAA approved revision. Garmin AT Inc - [STC SA4381NM](https://openairdocs.org/stc/SA4381NM): Installation of Cockpit Sun Visor. Rosen Sunvisor Systems LLC. Lists EMB-110 Series - [STC SA02154AK](https://openairdocs.org/stc/SA02154AK): Installation of the UPS Aviation Technologies Inc. Apollo MX20 multi-function display, P/N 430-0270-500. Garmin AT Inc - [STC SA02217AK](https://openairdocs.org/stc/SA02217AK): Installation of Garmin AT Model GDL90 UAT Data Link System, in accordance with Garmin AT, Inc., GDL 90 UAT Master Data List, P/N 560-0278-01, Revision A, dated November 12, 2004, or later FAA approved revision. Garmin AT Inc - [STC SA4962NM](https://openairdocs.org/stc/SA4962NM): Installation of a NSA sunvisor system for the pilot and copilot. Rosen Sunvisor Systems LLC - [STC SA00823CH](https://openairdocs.org/stc/SA00823CH): Installation of various de-icer wire harnesses. SMR Technologies - [STC SA00694SE](https://openairdocs.org/stc/SA00694SE): Replacement of certain BF Goodrich pneumatic deicer boots. SMR Technologies - [STC SA812NE](https://openairdocs.org/stc/SA812NE): Installation of BF Goodrich Model 6975-1 De-Icer kit or BF Goodrich Model 6975-10 De-Icer kit. BF Goodrich Aerospace - [STC SA5576SW](https://openairdocs.org/stc/SA5576SW): Installation of tail floodlight system. DeVore Aviation Corporation of America, a New Mexico Corporation - [STC SA00883AT-D](https://openairdocs.org/stc/SA00883AT-D): Installation and operation of an AlliedSignal TCAS CAS 66A System installed. Air Sunshine, Inc - [STC ST01558AT](https://openairdocs.org/stc/ST01558AT): Installation of an AlliedSignal MK-VI Ground Proximity Warning System (GPWS). Air Sunshine, Inc. Lists EMB-110 Series - [STC SA00231DE](https://openairdocs.org/stc/SA00231DE): Reconfigure aircraft to a maximum seating of Nine (9) passengers. Leading Edge Aviation Svcs - [STC SA1167SO](https://openairdocs.org/stc/SA1167SO): Replace existing nickel-cadmium batteries with Teledyne Gill BB638/T series lead-acid battery. Teledyne Battery Products - [STC SA00884AT-D](https://openairdocs.org/stc/SA00884AT-D): Installation and operation of an AlliedSignal TCAS CAS 66A System. East Coast Avionics, Inc - [STC SA02020AK](https://openairdocs.org/stc/SA02020AK): Installation of ground proximity warning system. Centaurus Systems, Inc - [STC SA00634AT](https://openairdocs.org/stc/SA00634AT): Installation of Dayton-Granger dischargers. Dayton-Granger, Inc All 133: https://openairdocs.org/aircraft/N72RA/stcs.md ## Related - Other Embraer EMB-110P1 aircraft: https://openairdocs.org/model/embraer-emb-110p1/aircraft.md - The Pratt & Whitney PT6A series engine: https://openairdocs.org/engine/pratt-whitney-pt6a-series.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.