# N971LL: 1999 Raytheon B300

- Status: Valid registration
- Airframe: [Raytheon B300](https://openairdocs.org/model/raytheon-b300) (registry code 7150007, 19 seats)
- Engine: [Pratt & Whitney Canada PT6-65AR](https://openairdocs.org/engine/pratt-whitney-canada-pt6-65ar) (registry code 52107)
- Data sheets: [TCDS A24CE](https://openairdocs.org/tcds/A24CE) (Textron Aviation Inc.) (OpenAirDocs)
- Serial number: FL-267
- Year built: 1999
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, commuter
- Airworthiness date: December 10, 1999
- Certificate issued: May 25, 2000
- Expires: April 30, 2030
- Mode S code: AD8861
- Registered owners: [State Of Illinois](https://openairdocs.org/faa-owner/STATE%20OF%20ILLINOIS), [Department Of Transportation](https://openairdocs.org/faa-owner/DEPARTMENT%20OF%20TRANSPORTATION), [Division Of Aeronautics](https://openairdocs.org/faa-owner/DIVISION%20OF%20AERONAUTICS)
- Location: [Springfield, IL](https://openairdocs.org/faa-place/IL/Springfield)
- Owner type: Government
- Owner's area on the map: 39.8555° N, 89.6501° W: Placed by OpenAirDocs at the center of ZIP code 62707, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=971LL
- Page: https://openairdocs.org/aircraft/N971LL

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): 32 in force

### Matched by airframe (Raytheon B300)

- [AD 2026-15-05](https://openairdocs.org/ad/2026-15-05): Wing Structure · Textron B300 and B300C. Effective Aug 10, 2026
- [AD 2025-20-11](https://openairdocs.org/ad/2025-20-11): Rudder Control System · Textron B200GT, B200CGT, B300 and 1 more. Effective Oct 17, 2025
- [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 2022-03-23](https://openairdocs.org/ad/2022-03-23): Rudder Control System · Garmin G1000 Integrated Avionics System and GFC 700 Automatic… (STC SA01535WI-D). Effective Feb 22, 2022
- [AD 2021-05-17](https://openairdocs.org/ad/2021-05-17): NAVIGATION SYSTEM · Rockwell Collins FDSA-6500, CL-600-2B16 (CL-604), 525B and 7 more. Effective Apr 29, 2021
- [AD 2011-15-05](https://openairdocs.org/ad/2011-15-05): Charts · Textron B300 and B300C (C-12W). Effective Aug 19, 2011
- [AD 2010-26-03](https://openairdocs.org/ad/2010-26-03): Ice and Rain Protection · Textron B200, B200GT, B300 and 1 more. Effective Dec 20, 2010
- [AD 2010-05-10](https://openairdocs.org/ad/2010-05-10): Instruments · Textron B300 and B300C (C-12W). Effective Apr 8, 2010
- [AD 2006-16-18 R1](https://openairdocs.org/ad/2006-16-18-R1): Installing a warning placard on the TAWS/RMI · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 100 more. Effective Jul 18, 2008
- [AD 2007-12-06](https://openairdocs.org/ad/2007-12-06): Flight controls · Textron B200, B200C, B300 and 2 more. Effective Jul 16, 2007
- [AD 2006-19-09](https://openairdocs.org/ad/2006-19-09): Passenger seat mod kit · Textron B300. Effective Oct 24, 2006
- [AD 2005-01-18](https://openairdocs.org/ad/2005-01-18): Fuselage stringers · Textron 200, 200C, 200CT and 24 more. Effective Mar 1, 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 2005-01-04](https://openairdocs.org/ad/2005-01-04): Fuel hose · Textron 100, 200, 200C and 29 more. Effective Feb 22, 2005
- [AD 2004-17-02](https://openairdocs.org/ad/2004-17-02): Cross shaft attach bolt · Textron 100, 1900, 1900C and 52 more. Effective Oct 4, 2004
- [AD 2003-02-03](https://openairdocs.org/ad/2003-02-03): Airstair door and emergency exits · Textron 100, 200, 2000 and 46 more. Effective Mar 7, 2003
- [AD 2002-23-11](https://openairdocs.org/ad/2002-23-11): Elevator Balance Weight Attachment Screws · Textron 1900, 1900C, 1900C (C-12J) and 30 more. Effective Jan 10, 2003
- [AD 2002-14-19](https://openairdocs.org/ad/2002-14-19): Collins Air Data Computers (ADC) · Boeing DC-8-11, DC-8-12, DC-8-21 and 36 more. Effective Aug 23, 2002
- [AD 99-18-15](https://openairdocs.org/ad/99-18-15): Landing Gear Emergency Hand Pumps · Textron 1900D, B200, B300 and 1 more. Effective Sep 27, 1999
- [AD 99-09-10](https://openairdocs.org/ad/99-09-10): Landing Gear Hand Pump · Textron 200CT, 300, A200CT (C-12D) and 19 more. Effective Jun 7, 1999
- [AD 99-09-15](https://openairdocs.org/ad/99-09-15): Flight Control Mechanism · Textron 1900D, 58, 58A and 5 more. Effective May 18, 1999
- [AD 99-02-16](https://openairdocs.org/ad/99-02-16): Elevator Trim Tab System · Textron B300 and B300C. Effective Mar 12, 1999
- [AD 98-25-02](https://openairdocs.org/ad/98-25-02): Top-mounted Antenna · Bell Helicopter Textron Canada 407, 172, 172A and 243 more. Effective Dec 22, 1998
- [AD 98-21-35](https://openairdocs.org/ad/98-21-35): Actuator Clevis Assembly in Main Landing Gear · Textron 200T, 300, A200CT (C-12D) and 15 more. Effective Nov 23, 1998
- [AD 98-04-24](https://openairdocs.org/ad/98-04-24): AFM - Limitations Section - Icing · Textron 100, 300, 58 and 13 more. Effective Mar 13, 1998
- [AD 97-25-03](https://openairdocs.org/ad/97-25-03): AFM - Limitations - Power Levers · Textron 100, 1900, 1900C and 44 more. Effective Jan 21, 1998
- [AD 97-25-01](https://openairdocs.org/ad/97-25-01): Outflow/Safety Valve · Textron 100, 200, 2000 and 38 more. Effective Jan 11, 1998
- [AD 97-23-17](https://openairdocs.org/ad/97-23-17): Pneumatic Tubing · Textron 200, 200C, 200CT and 30 more. Effective Dec 29, 1997
- [AD 91-20-14 R1](https://openairdocs.org/ad/91-20-14-R1): Performance Charts and Information · Textron B300 and B300C. Effective Sep 12, 1994
- [AD 94-01-01](https://openairdocs.org/ad/94-01-01): Cabin Seats · Textron B300 and B300C. Effective Feb 11, 1994
- [AD 92-15-01](https://openairdocs.org/ad/92-15-01): Truss-To-Firewall Bolts · Textron 100, 200, 200C and 40 more. Effective Aug 21, 1992
- [AD 92-06-11](https://openairdocs.org/ad/92-06-11): Autopilot/Flight Director System Wiring · Textron 1900C, 300, B200 and 2 more. Effective Mar 30, 1992

### Matched by engine (Pratt & Whitney Canada PT6-65AR)

None in force.

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

- [AD 2019-12-09](https://openairdocs.org/ad/2019-12-09) (historical): Navigation · Bombardier CL-600-2B16 (CL-604), Flight Display System Application FDSA-6500, 525B and 13 more. Effective Jul 23, 2019
- [AD 2008-07-10](https://openairdocs.org/ad/2008-07-10) (historical): Pneumatic supply tube · Hawker Beechcraft B200, B200GT, B300 and 1 more. Effective Apr 10, 2008
- [AD 2006-23-02](https://openairdocs.org/ad/2006-23-02) (historical): Flight controls for improper assembly or damage · Raytheon B200, B200C, B300 and 2 more. Effective Dec 13, 2006
- [AD 98-15-13](https://openairdocs.org/ad/98-15-13) (historical): Fuel Hose · Raytheon 100 Model or Series (all), 200 Model or Series (all), 200C and 32 more. Effective Aug 28, 1998
- [AD 96-17-10](https://openairdocs.org/ad/96-17-10) (historical): Outflow/Safety Valve · Raytheon 200 Model or Series (all), 2000, 300 and 5 more. Effective Sep 24, 1996
- [AD 93-25-07](https://openairdocs.org/ad/93-25-07) (historical): Fuselage Stringers · Raytheon 200 Model or Series (all), 200C, 200CT and 22 more. Effective Feb 15, 1994

## Information bulletins (advisory) (2 in force)

- [SAIB CE-15-15](https://openairdocs.org/saib/CE-15-15): Empennage  Horizontal & Vertical Stabilizer Structure. Issued Apr 20, 2015
- [SAIB CE-12-36](https://openairdocs.org/saib/CE-12-36): Flight Controls: Aileron. Issued Jun 19, 2012

## NTSB investigations

None matched to N971LL.

## NTSB investigations on N971LL not matched to an aircraft (1)

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 CHI71AC013](https://openairdocs.org/ntsb/CHI71AC013), Aug 12, 1970: Cessna 310D (N971LL), Xenia, IL, substantial damage, 1 fatal

## FAA accident and incident reports

None matched to N971LL.

## Reports on N971LL not matched to an aircraft (1)

They name N971LL, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19960209004769I](https://openairdocs.org/incident/19960209004769I), Feb 9, 1996: Beech 200BEECH (N971LL), Springfield, IL. Narrative: nose gear down lock switch failed, allowing gear handle light to remain on. Maintenance personnel replaced the switch and operational checks…

## Service difficulty reports (10)

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 LX5R2012021400001](https://openairdocs.org/sdr/LX5R2012021400001), Feb 10, 2012: LOCKWASHER. BROKEN. ON CLIMBOUT, TOWER REPORTED THAT THE LT MAIN GEAR WAS STILL EXTENDED. CREW NOTED THAT THEY STILL HAD THE "DOWN AND LOCKED" GREEN LIGHT FOR THE LT GEAR. PROCEEDE
- [SDR LX5R200700004](https://openairdocs.org/sdr/LX5R200700004), Jun 5, 2007: BALANCE WEIGHT. DETACHED. UPON PILOT PREFLIGHT, IT WAS DISCOVERED THAT THE RIGHT HAND AILERON HAD SOMETHING LOOSE INSIDE MOVING AROUND. THE AIRCRAFT WAS BROUGHT INTO MAINTENANCE AND THE 
- [SDR LX5R200700002](https://openairdocs.org/sdr/LX5R200700002), Jun 5, 2007: BALANCE WEIGHT. DETACHED. UPON PILOT PREFLIGHT, IT WAS DISCOVERED THAT THE RIGHT HAND AILERON HAD SOMETHING LOOSE INSIDE MOVING AROUND. THE AIRCRAFT WAS BROUGHT INTO MAINTENANCE AND THE 
- [SDR 20010501CW015](https://openairdocs.org/sdr/20010501CW015), Apr 12, 2001: SWITCH. INOPERATIVE. LEFT BRAKE DEICE VALVE INDICATING LIGHT CIRCUIT OPEN IN VALVE.
- [SDR 20001103SH009](https://openairdocs.org/sdr/20001103SH009), Oct 3, 2000: VALVE. FAILED. BRAKE DE-ICE VALVE FAILED IN ''ON'' POSITION. (X)
- [SDR 20000925SH013](https://openairdocs.org/sdr/20000925SH013), Sep 5, 2000: VALVE. FAILED. WHEN BRAKE DE-ICE SYSTEM IS TURNED ON, THIS VALVE ASSY FAILS TO ILLUMINATE THE LEFT DE-ICE LIGHT. (X)
- [SDR 20000814SH013](https://openairdocs.org/sdr/20000814SH013), Jul 28, 2000: SHUTOFF VALVE. STUCK. BRAKE DE-ICE VALVE ON INDICATION SWITCH STICKING AND WOULD NOT INDICATE ON. (X)
- [SDR 20000613SH019](https://openairdocs.org/sdr/20000613SH019), Apr 10, 2000: ALTIMETER. STUCK. NEEDLE STICKS AT HIGHER ALTITUDE. (X)
- [SDR 20000613SH018](https://openairdocs.org/sdr/20000613SH018), Apr 10, 2000: DISPLAY. INTERMITTENT. DISPLAY INTERMITTENTLY GOES BLANK. (X)
- [SDR 20000613SH017](https://openairdocs.org/sdr/20000613SH017), Apr 4, 2000: TRANSDUCER. READS LOW. FUEL FLOW TRANSDUCER INDICATED LOW FUEL FLOW. (X)

## Service difficulty reports on N971LL not matched to an aircraft (5)

They name N971LL, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR 96ZZZX2962](https://openairdocs.org/sdr/96ZZZX2962), May 10, 1996: TERMINAL STUD. THREADS WEAR. WHEN INSTALLING PLASTIC TERMINAL COVER, COVER HOLD-DOWN NUTS TEND TO WEAR THREADS ON STUDS CAUSING THE TERMINAL NUT TO STRIP THE STUD UPON NEXT INSTALLATION. TI
- [SDR 96ZZZX1952](https://openairdocs.org/sdr/96ZZZX1952), Feb 9, 1996: SWITCH. DEFECTIVE. NO NOSE GEAR DOWN AND LOCKED INDICATION AND INTRANSIT LIGHT IN HANDLE REMAINED ON DURING NORMAL EXTENSION. AN EMERGENCY EXTENSION PROVIDED A DOWN AND LOCK LIGHT
- [SDR 95ZZZX6029](https://openairdocs.org/sdr/95ZZZX6029), Sep 27, 1995: BULKHEAD. CRACKED. DURING PRIMARY INSPECTION, FOUND CRACKED BULKHEADS UNDER LEFT CABIN FLOOR, JUST FORWARD OF MAIN CABIN DOOR AREA. THREE ADJACENT BULKHEADS WERE CRACKING IN SAME 
- [SDR 95ZZZX5856](https://openairdocs.org/sdr/95ZZZX5856), Sep 21, 1995: GAUGE. FAILED. THIS GAUGE IS PART OF STC SA4378WP AVIADESIGN, INC., HYDRAULIC LANDING GEAR SYSTEM. GAUGE FOUND PEGGED ON HIGH SIDE. AFTER RELEASING PRESSURE, GAUGE DROPPED TO 
- [SDR 95ZZZX3730](https://openairdocs.org/sdr/95ZZZX3730), Jul 14, 1995: DIAPHRAM. RUPTURED. DIAPHRAM RUPTURED RENDERING BLEED VALVE INOPERATIVE.

## STCs that may be installed (OpenAirDocs) (422, 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 (Raytheon B300)

- [STC SA03025CH](https://openairdocs.org/stc/SA03025CH): Installation of weather research equipment and weather modification equipment for the purpose of modifying weather conditions. 3S Certification, LLC
- [STC SA04617NY](https://openairdocs.org/stc/SA04617NY): Installation of the Medivac Audio System. Avmax Aviation Services Inc
- [STC SA04218NY](https://openairdocs.org/stc/SA04218NY): Installation of Wing Tip Low Profile Pylons with Pods, Underwing Wiring Tunnel and Optional Underwing Antenna Provisions and Antennas. Aerospace Design & Compliance LLC
- [STC SA4175NM](https://openairdocs.org/stc/SA4175NM): Installation of fully enclosed main landing gear door system for high-flotation- gear-equipped aircraft. Raisbeck Engineering Inc
- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC
- [STC SA02658LA](https://openairdocs.org/stc/SA02658LA): Replacement of the original Pratt and Whitney PT6A-60A engines and propellers with Pratt and Whitney PT6A-67A engines and MT Propeller MTV-27-1-N-C-F-R(P)/CFR260-65b propellers. Blackhawk Modifications LLC
- [STC SA02279AT](https://openairdocs.org/stc/SA02279AT): Installation of a Boom Beam bulb, starter, and ballast. Whelen Aerospace Technologies
- [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 SA04221CH](https://openairdocs.org/stc/SA04221CH): Installation of Thermal Acoustic Kit. Skandia Inc
- [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 SA04808NY](https://openairdocs.org/stc/SA04808NY): Installation of Mission Systems for Flight Inspection. Delta Engineering Corporation
- [STC SA03204CH](https://openairdocs.org/stc/SA03204CH): Installation of an RF Transparent Pod. DS Technologies LLC D/B/A DST
- [STC SA02133SE](https://openairdocs.org/stc/SA02133SE): Installation of a Luma Technologies LT-4500 Series Integrated Light\Emitting Diode (LED) Display Panel and LT-3500 LED light modules. Luma Technologies LLC
- [STC SA12345IB](https://openairdocs.org/stc/SA12345IB): Replacement of the Halon Type 1211 portable fire extinguisher with the Halotron BrX portable fire extinguisher. Cessna Duesseldorf Citation Service Center GmbH
- [STC SA11302DS](https://openairdocs.org/stc/SA11302DS): Installation of the Pro Line Fusion embedded display system (EDS) latest version 3.7 software upgrade and additional factory options. BHE & Associates Ltd
- [STC SA03930NY](https://openairdocs.org/stc/SA03930NY): Installation of King Air Belly Payload Mount. Icarus Aero Inc
- [STC SA02017WI](https://openairdocs.org/stc/SA02017WI): The Installation of the Parker-Meggitt iPRESS™ System. 3S Certification LLC
- [STC SA03275CH](https://openairdocs.org/stc/SA03275CH): Installation of an antiskid brake system. Lee Air Inc
- [STC SA01638WI](https://openairdocs.org/stc/SA01638WI): Part Fabrication and Installation of Arm Ledge System and Table Assembly for aircraft cabin interior. Aviation Fabricators Inc
- [STC SA12242IB](https://openairdocs.org/stc/SA12242IB): Manufacturing and Installation of King Air Equipment. ICARUS AERO INC
- [STC ST04442CH](https://openairdocs.org/stc/ST04442CH): Installation of SmartSky LiTE System. Apcela IFC JV, LLC dba Apcela ATG
- [STC SA11158SC](https://openairdocs.org/stc/SA11158SC): Demonstration of aircraft tolerance to potential electromagnetic interference from certain Transmitting Potable Electronic Devices (T-PEDS). Liberty Partners Inc
- [STC SA04757NY](https://openairdocs.org/stc/SA04757NY): Installation of a Lower-Fuselage Radome with Extended Nose & updated ECS. Metrea Special Aerospace, ISR Inc. (an Arizona Corporation)
- [STC SA12202IB](https://openairdocs.org/stc/SA12202IB): Installation of Garmin GWX Weather Radar System. Maxcraft Avionics Ltd
- [STC SA10800SC](https://openairdocs.org/stc/SA10800SC): Installation of a 3-tube Rockwell Collins IDS-3000 Electronic Flight Instrument System with File Server Unit (FSU). BHE & Associates LTD
- [STC SA01535WI-D](https://openairdocs.org/stc/SA01535WI-D): Installation of the Garmin G1000 Integrated Avionics System and GFC 700 Automatic Flight Control System and optional Electronic Stability and Protection (ESP). Garmin International Inc
- [STC SA10965SC](https://openairdocs.org/stc/SA10965SC): Installation of upgraded hardware to the Rockwell Collins Pro Line 21 FMS-3000 to provide Localizer Performance with Vertical Guidance (LPV). BHE & Associates LTD
- [STC SA04749NY](https://openairdocs.org/stc/SA04749NY): Atmospheric Research Aircraft Modification. Avcon Industries, Inc
- [STC SA04797NY](https://openairdocs.org/stc/SA04797NY): Atmospheric Research Aircraft Modification. Avcon Industries Inc
- [STC SA11300DS](https://openairdocs.org/stc/SA11300DS): Upgrade previously installed Collins Aerospace Radar Altimeter. BHE & Associates Ltd
- [STC SA2300CE](https://openairdocs.org/stc/SA2300CE): Installation of Removable External Baggage Compartment. Avcon Industries Inc
- [STC SA00263WI](https://openairdocs.org/stc/SA00263WI): Installation of 60 cubic foot cargo compartment on fuselage lower surface. Metrea Special Aerospace ISR Inc
- [STC SA01936LA](https://openairdocs.org/stc/SA01936LA): Installation of a Wescam FLIR unit into an extended fuselage nose (STC SA00367SE). Metrea Special Aerospace ISR Inc
- [STC SA03343CH](https://openairdocs.org/stc/SA03343CH): Extended Range Fuel Tanks. Metrea Special Aerospace ISR Inc
- [STC SA2794NM](https://openairdocs.org/stc/SA2794NM): Installation of Flight Equipment and Engineer Corp. passenger seats. Metrea Special Aerospace ISR Inc
- [STC SA6078NM](https://openairdocs.org/stc/SA6078NM): Installation of forward facing two-passenger seat. Metrea Special Aerospace ISR Inc
- [STC SA03342CH](https://openairdocs.org/stc/SA03342CH): Operating Weight Increase. Metrea Special Aerospace ISR Inc
- [STC SA00400BO](https://openairdocs.org/stc/SA00400BO): Installation of an Autothrottle System (ATS). Innovative Solutions & Support Inc
- [STC SA156CH](https://openairdocs.org/stc/SA156CH): Installation of a TCAS I. Acron Aviation Inc
- [STC SA9210SC-D](https://openairdocs.org/stc/SA9210SC-D): Installation of the L-3 Communications Avionics Systems Infrared Imaging System (IRIS). Acron Aviation Inc
- [STC SA04191NY](https://openairdocs.org/stc/SA04191NY): Installation of Underwing Pylons with a Pod and Underwing Wiring Tunnel. Aerospace Design & Compliance LLC
- [STC SA00225MC](https://openairdocs.org/stc/SA00225MC): Project 10684-1 Installation of Mission System Modifications for a MX-15/MX-20 Sensor System. L3Harris Technologies Integrated Systems L.P
- [STC SA11914IB](https://openairdocs.org/stc/SA11914IB): Installation of the MT-Propeller Entwicklung GmbH MTV-47-1-()-C-F-R(P)/CFR260-361(). MT-Propeller Entwicklung GmbH
- [STC SA11133SC](https://openairdocs.org/stc/SA11133SC): Installation of a Rockwell Collins Pro Line 21 update to include optional TAWS mode 5 warnings during LPV approaches, optional ADS-B Out, optional synthetic vision system (SVS), optional Communication Management Unit (CMU) and 3rd VHF to support Controller Pilot Data Link. BHE & Associates LTD
- [STC SA00416BO](https://openairdocs.org/stc/SA00416BO): Installation of an Outerlink Satellite Communications System (Satcom) and Flight Data Monitoring System Kit. Outerlink Corporation
- [STC SA11855IB](https://openairdocs.org/stc/SA11855IB): Installation of the Flap Roller Bearing Assembly. Marsh Brothers Aviation Inc
- [STC SA01101DE](https://openairdocs.org/stc/SA01101DE): Installation of Gogo AVANCE L5/LX5 System. Aviation Fabricators Inc
- [STC SA11301DS](https://openairdocs.org/stc/SA11301DS): Installation of an AirSync flight data monitoring system. BHE & Associates Ltd
- [STC SA02038WI](https://openairdocs.org/stc/SA02038WI): Installation of the Universal Avionics ClearVision and Enhanced Vision System (EVS) equipment. Global Aviation Tech LLC

All 422: https://openairdocs.org/aircraft/N971LL/stcs.md

## Related

- Other Raytheon B300 aircraft: https://openairdocs.org/model/raytheon-b300/aircraft.md
- The Pratt & Whitney Canada PT6-65AR engine: https://openairdocs.org/engine/pratt-whitney-canada-pt6-65ar.md

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