# N924MM: 2024 Airbus Helicopters AS350B3E - Status: Valid registration - Airframe: [Airbus Helicopters AS350B3E](https://openairdocs.org/model/airbus-helicopters-as350b3e) (registry code 1155005, 7 seats) - Engine: [Safran ARRIEL-2D](https://openairdocs.org/engine/safran-arriel-2d) (registry code 59997) - Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU) (Airbus Helicopters), [TCDS E00054EN](https://openairdocs.org/tcds/E00054EN) (Safran Helicopter Engines S.A.) (OpenAirDocs) - Serial number: 9655 - Year built: 2024 - Type: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Standard, normal - Airworthiness date: March 25, 2025 - Certificate issued: February 26, 2025 - Expires: February 29, 2032 - Mode S code: ACCE25 - Registered owner: [Aircraft Trustee Services Inc Owner Trustee](https://openairdocs.org/faa-owner/AIRCRAFT%20TRUSTEE%20SERVICES%20INC%20OWNER%20TRUSTEE) - Location: [Dover, DE](https://openairdocs.org/faa-place/DE/Dover) - Owner type: Corporation - Owner's area on the map: 39.1815° N, 75.4736° W: Placed by OpenAirDocs at the center of ZIP code 19901, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=924MM - Page: https://openairdocs.org/aircraft/N924MM 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): 3 in force ### Matched by airframe (Airbus Helicopters AS350B3E) None in force. ### Matched by engine (Safran ARRIEL-2D) - [AD 2023-22-03](https://openairdocs.org/ad/2023-22-03): Turbine section · Safran Helicopter Engines Arriel 2D and Arriel 2E. Effective Dec 26, 2023 - [AD 2016-25-13](https://openairdocs.org/ad/2016-25-13): Engine accessory gearbox (AGB) · Safran Helicopter Engines Arriel 2B, Arriel 2B1, Arriel 2C and 6 more. Effective Feb 3, 2017 - [AD 2013-22-22](https://openairdocs.org/ad/2013-22-22): Hydromechanical metering unit (HMU) · Turbomeca Arriel 2D. Effective Dec 20, 2013 ### Historical (superseded or no longer in force) - [AD 2021-08-02](https://openairdocs.org/ad/2021-08-02) (historical): Turbine Section · Safran Helicopter Engines Arriel 2D and Arriel 2E. Effective Jun 21, 2021 - [AD 2016-04-12](https://openairdocs.org/ad/2016-04-12) (historical): Engine accessory gearbox (AGB) · Turbomeca Arriel 2B, Arriel 2B1, Arriel 2C and 6 more. Effective Apr 14, 2016 - [AD 2013-01-07](https://openairdocs.org/ad/2013-01-07) (historical): Hydro-mechanical metering unit (HMU) · Turbomeca Arriel 2D. Effective Mar 7, 2013 ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N924MM. ## NTSB investigations on N924MM 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 ERA19LA019](https://openairdocs.org/ntsb/ERA19LA019), Oct 18, 2018: Cessna 172 (N924MM), Lynchburg, VA, substantial damage. Probable cause: The stuck No. 2 cylinder exhaust valve, which resulted in a partial loss of engine power and a subsequent forced landing and impact with a ditch. ## FAA accident and incident reports None matched to N924MM. ## Reports on N924MM not matched to an aircraft (1) They name N924MM, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [Accident 20181018023769A](https://openairdocs.org/incident/20181018023769A), Oct 18, 2018: Cessna 172S (N924MM), Lynchburg, VA, Substantial damage. Instructional flight taking off from rwy 4 at Lynchburg Regional Airport(lyh) experienced loss of engine RPM and vibration at approx 300 ft AGL. Performed… ## 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. ## Service difficulty reports on N924MM not matched to an aircraft (2) They name N924MM, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR 2016FA0000487](https://openairdocs.org/sdr/2016FA0000487), Oct 10, 2016: PUSHROD. NO TEST. DURING INSPECTION, THE CYLINDER NR 4 EXHAUST FAILED THE DRY VALVE LASH CLEARANCE CHECK, TOO TIGHT, REMOVED AND INSTALLED A NEW PUSHROD. - [SDR 2016FA0000443](https://openairdocs.org/sdr/2016FA0000443), Mar 8, 2016: VALVE. LEAKING. DURING 50 HR OIL CHANGE PERFORMED DIFFERENTIAL PRESSURE CYLINDER LEAK CHECK, CYLINDER NR 2 FAILED, (5/80PSI). LEAKED BY EXHAUST AND INTAKE VALVE. ENGINE TIME SI ## STCs that may be installed (OpenAirDocs) (10) 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 (Airbus Helicopters AS350B3E) - [STC SR09139RC](https://openairdocs.org/stc/SR09139RC): Installation of an air medical system. LifePort LLC. Lists AS-350 Series - [STC SR01486NY](https://openairdocs.org/stc/SR01486NY): Installation of Spacecam RAMS camera mount. SPACECAM Systems Inc. Lists AS-350 Series - [STC SR01058LA](https://openairdocs.org/stc/SR01058LA): Installation of a camera mount system. Airfilm Camera Systems. Lists AS-350 Series - [STC SH7328SW-D](https://openairdocs.org/stc/SH7328SW-D): Relocation of aircraft dataplate. American Eurocopter Corporation. Lists AS-350 Series - [STC SR01411NY](https://openairdocs.org/stc/SR01411NY): Installation of OSAT-100 Airborne Position/Data Communicator. Technisonic Industries Limited. Lists AS-350 Series - [STC SR00831LA](https://openairdocs.org/stc/SR00831LA): Installation of Apical Emergency float kit, p/n 20416. Apical Industries Inc. Lists AS-350 Series - [STC SR01441AT](https://openairdocs.org/stc/SR01441AT): Installation of Ultra Media Camera System. Aero Avionics, Inc. Lists AS-350 Series - [STC SR00491AT-D](https://openairdocs.org/stc/SR00491AT-D): Installation and operation of a Tyler Camera mount systems nose camera mount. Tyler Camera Systems. Lists AS-350 Series - [STC SH4970SW](https://openairdocs.org/stc/SH4970SW): Installation of Marathon TCA or TSP 1735 battery. Marathon Power Tech Co. Lists AS-350 Series - [STC SH5050NM](https://openairdocs.org/stc/SH5050NM): Installation of Tyler middle mount camera system in aft compartment of Aerospatiale AS-350 and AS-355 Series helicopters. Tyler Camera Systems. Lists AS-350 Series ## Earlier aircraft with N924MM The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N924MM before. - [Cancelled 2008-07-07](https://openairdocs.org/deregistered/N924MM-2008-07-07): Aerospatiale AS350B, S/N 1837, built 1985. Exported to Ukraine. Owner: [Worldwide Aviation & Charter LLC](https://openairdocs.org/faa-owner/WORLDWIDE%20AVIATION%20%26%20CHARTER%20LLC), [Scottsdale, AZ](https://openairdocs.org/faa-place/AZ/Scottsdale) ## Related - Other Airbus Helicopters AS350B3E aircraft: https://openairdocs.org/model/airbus-helicopters-as350b3e/aircraft.md - The Safran ARRIEL-2D engine: https://openairdocs.org/engine/safran-arriel-2d.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.