# N385MH: 2007 Learjet 45

- Status: Valid registration
- Airframe: [Learjet 45](https://openairdocs.org/model/learjet-45) (registry code 5170805, 12 seats)
- Engine: [Honeywell TFE731-20BR](https://openairdocs.org/engine/honeywell-tfe731-20br) (registry code 33919)
- Data sheets: [TCDS T00008WI](https://openairdocs.org/tcds/T00008WI) (Learjet Inc.), [TCDS E1NM](https://openairdocs.org/tcds/E1NM) (Honeywell Aerospace US LLC) (OpenAirDocs)
- Serial number: 346
- Year built: 2007
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: November 8, 2007
- Certificate issued: March 23, 2023
- Expires: March 31, 2030
- Mode S code: A46EF8
- Registered owner: [Guardian Flight LLC](https://openairdocs.org/faa-owner/GUARDIAN%20FLIGHT%20LLC)
- Location: [Lewisville, TX](https://openairdocs.org/faa-place/TX/Lewisville)
- Owner type: LLC
- Owner's area on the map: 33.0765° N, 96.9079° W: Placed by OpenAirDocs at the center of ZIP code 75056, 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=385MH
- Page: https://openairdocs.org/aircraft/N385MH

From the FAA registry file of October 20, 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): 33 in force

### Matched by airframe (Learjet 45)

- [AD 2023-01-05](https://openairdocs.org/ad/2023-01-05): Pneumatic · Learjet 45. Effective Mar 9, 2023
- [AD 2021-23-11](https://openairdocs.org/ad/2021-23-11): Powerplant System · Learjet 45. Effective Jan 10, 2022
- [AD 2021-23-08](https://openairdocs.org/ad/2021-23-08): Wing, Center Box · Learjet 45. Effective Jan 10, 2022
- [AD 2015-12-06](https://openairdocs.org/ad/2015-12-06): Fuselage · Learjet 45. Effective Jul 21, 2015
- [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
- [AD 2014-13-06](https://openairdocs.org/ad/2014-13-06): Engine Exhaust · Learjet 45. Effective Aug 19, 2014
- [AD 2013-14-07](https://openairdocs.org/ad/2013-14-07): Equipment/Furnishings · Learjet 45. Effective Aug 26, 2013
- [AD 2012-08-08](https://openairdocs.org/ad/2012-08-08): Periodic Inspections · Learjet 45. Effective May 29, 2012
- [AD 2011-25-03](https://openairdocs.org/ad/2011-25-03): Landing Gear · Learjet 45. Effective Jan 23, 2012
- [AD 2011-13-10](https://openairdocs.org/ad/2011-13-10): Powerplant · Learjet 45. Effective Aug 1, 2011
- [AD 2011-04-08](https://openairdocs.org/ad/2011-04-08): Electrical power · Learjet 45. Effective Mar 31, 2011
- [AD 2010-21-19](https://openairdocs.org/ad/2010-21-19): Fire protection · Learjet 45. Effective Nov 18, 2010
- [AD 2010-07-02](https://openairdocs.org/ad/2010-07-02): Integrated navigation units (INUs) · 328 Support Services 328-100, 328-300, Jetstream Model 4101 and 26 more. Effective May 3, 2010
- [AD 2010-06-13](https://openairdocs.org/ad/2010-06-13): Flight controls · Learjet 45. Effective Apr 1, 2010
- [AD 2009-24-22](https://openairdocs.org/ad/2009-24-22): Equipment/Furnishings · Learjet 45. Effective Jan 8, 2010
- [AD 2008-01-03](https://openairdocs.org/ad/2008-01-03): Principal structural elements (PSEs · Learjet 45. Effective Feb 14, 2008
- [AD 2007-17-17](https://openairdocs.org/ad/2007-17-17): Unsealed gaps on the pylon side of the engine firewall · Learjet 31, 31A, 35 and 7 more. Effective Oct 2, 2007
- [AD 2007-09-03](https://openairdocs.org/ad/2007-09-03): Auxiliary power unit (APU) · Learjet 45. Effective May 11, 2007
- [AD 2006-19-04](https://openairdocs.org/ad/2006-19-04): Honeywell COM unit and Mode S transponder · Bombardier BD-700-1A10, BD-700-1A11, 550 and 26 more. Effective Oct 17, 2006
- [AD 2006-10-15](https://openairdocs.org/ad/2006-10-15): Inspection reference numbers (IRNs) · Learjet 45. Effective May 31, 2006
- [AD 2005-24-13](https://openairdocs.org/ad/2005-24-13): Electrical wire bundle for the alternator on the left-hand engine · Learjet 45. Effective Dec 20, 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 2003-17-08](https://openairdocs.org/ad/2003-17-08): Nose landing gear (NLG) squat switch camrod · Learjet 45. Effective Sep 24, 2003
- [AD 2003-16-09](https://openairdocs.org/ad/2003-16-09): Main landing gears (MLG) · Learjet 45. Effective Aug 27, 2003
- [AD 2003-16-19](https://openairdocs.org/ad/2003-16-19): Horizontal Stabilizer Actuator Assembly (HSAA) · Learjet 45. Effective Aug 13, 2003
- [AD 2003-06-51](https://openairdocs.org/ad/2003-06-51): Horizontal stabilizer actuator · Learjet 45. Effective Apr 28, 2003
- [AD 2002-17-01](https://openairdocs.org/ad/2002-17-01): Foot Warm circuit breaker · Learjet 45. Effective Sep 12, 2002
- [AD 2001-03-05](https://openairdocs.org/ad/2001-03-05): Anti-ice Manifold Assembly · Learjet 45. Effective Feb 20, 2001
- [AD 2000-08-13](https://openairdocs.org/ad/2000-08-13): Brakes · Learjet 45. Effective May 15, 2000

### Matched by engine (Honeywell TFE731-20BR)

- [AD 2019-05-07](https://openairdocs.org/ad/2019-05-07): Turbine Engine Compressor Section · Honeywell International TFE731-20AR, TFE731-20BR, TFE731-20R and 4 more. Effective Apr 25, 2019
- [AD 2014-12-52](https://openairdocs.org/ad/2014-12-52): Engines · Honeywell International TFE731-20AR, TFE731-20BR, TFE731-20R and 11 more. Effective Jul 28, 2014
- [AD 2012-16-14](https://openairdocs.org/ad/2012-16-14): LPT2 rotor blades · Honeywell International TFE731-20AR, TFE731-20BR, TFE731-20R and 5 more. Effective Oct 1, 2012
- [AD 2008-02-19](https://openairdocs.org/ad/2008-02-19): High pressure (HP) turbine rotor assemblies · Honeywell International TFE731-20AR, TFE731-20BR, TFE731-20R and 15 more. Effective Mar 6, 2008

### 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
- [AD 2009-11-13](https://openairdocs.org/ad/2009-11-13) (historical): Hydraulic power · Learjet 45. Effective Jun 17, 2009
- [AD 2006-22-05](https://openairdocs.org/ad/2006-22-05) (historical): Integrated navigation units (INUs) · 328 Support Services 328-100, 328-300, Jetstream Model 4101 and 27 more. Effective Dec 1, 2006
- [AD 2000-22-04](https://openairdocs.org/ad/2000-22-04) (historical): Nose Landing Gear · Learjet 45. Effective Dec 6, 2000

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

- [SAIB AIR-21-15R1](https://openairdocs.org/saib/AIR-21-15R1): Navigation System. Issued Sep 16, 2021
- [SAIB AIR-21-15](https://openairdocs.org/saib/AIR-21-15) (historical): Navigation System. Issued Aug 26, 2021

## NTSB investigations

None matched to N385MH.

## FAA accident and incident reports

None matched to N385MH.

## Service difficulty reports (2)

As reported by operators and repair stations.

- [SDR G1IA20240315060](https://openairdocs.org/sdr/G1IA20240315060), Mar 10, 2024: BLEED AIR SYS. LEAKING. WHILE CRUISING AT 41,000', WE HEARD 3 CHIMES AND OBSERVED A RED L ENG PYLON OVHT ILLUMINATION. I TOLD MY SIC TO GRAB THE QRH AND ADVISED HIM I WILL TAKE RADIO C
- [SDR G1IA20240313060](https://openairdocs.org/sdr/G1IA20240313060), Mar 10, 2024: WARNING MESSAGE. ILLUMINATED. WHILE CRUISING AT 41,000', WE HEARD 3 CHIMES AND OBSERVED A RED L ENG PYLON OVHT ILLUMINATION. I TOLD MY SIC TO GRAB THE QRH AND ADVISED HIM I WILL TAKE RADIO C

## Related

- Other Learjet 45 aircraft: https://openairdocs.org/model/learjet-45/aircraft.md
- STCs for the Learjet 45: https://openairdocs.org/model/learjet-45/stcs.md
- The Honeywell TFE731-20BR engine: https://openairdocs.org/engine/honeywell-tfe731-20br.md

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.