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Aircraft record

N904ERDiamond DA 42

Registration validUnclaimedSource: FAA, updated Oct 19, 2026

Safety record in brief:No NTSB accidents or incidents since 198217 ADs may apply7 service difficulty reports

Registration
Valid
expires Aug 31, 2028
Based in
Farmingdale, NY
owner city / state
Owners
1
since 2018
NTSB events
None
since 1982
ADs may apply
17
confirm with A&P
Service reports
7
since 1995

Registration

FAA Aircraft Registry · Oct 19, 2026
Registered owner
Heavy Metal Air LLC
Owner type
LLC
City, state
Farmingdale, NY
Certificate issued
Aug 25, 2018
Expires
Aug 31, 2028

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Diamond
Model
DA 42
Serial number
42.281
Aircraft type
Fixed wing multi engine
Category
Land
Certification
Type Certificated
Seats
4
Engines
2
Max takeoff weight
Up to 12,499 lb
Mode S code
AC7E7C

Engine

Type
Reciprocating

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 2018 – nowHeavy Metal Air LLCFarmingdale, NY · current

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 19, 2026 · SDRs · Oct 16, 2026

NTSB events (0)

No NTSB accidents or incidents found for this airframe since 1982.

Accident history for this model

ADs published since 1998 that may apply (17)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2026-14-08Diamond Aircraft Industries GmbHJul 20, 2026Airframe (DA 42)
2025-24-07Passenger/Crew DoorsFeb 12, 2026Airframe (DA 42)
2024-06-13Flight Control SystemMay 28, 2024Airframe (DA 42)
2022-06-08Flight Control SystemMay 9, 2022Airframe (DA 42)Only with: Flap bell crank P/N D60-2757-11-00, up to and including revision "f", installed.
2021-22-03Nose/Tail Landing Gear Attach SectionDec 21, 2021Airframe (DA 42)
Show all 17 ADs
ADSubjectEffectiveApplies to
2018-10-10Engine ExhaustJun 12, 2018Airframe (DA 42)Certain serial numbers: DA 42 42.004–42.427; DA 42 42.AC001–42.AC151. Only with: TAE 125-02-99 or TAE 125-02-114 engine installed and equipped with original exhaust pipe DAI P/N D60-9078-06-01 or Technify P/Ns 52-7810-H0001 02/03/04, or modified exhaust pipe DAI P/N D60-9078-06-01_01 or Technify 52-7810-H0014 01.
2013-19-11Landing GearOct 31, 2013Airframe (DA 42)
2013-07-01Landing GearMay 20, 2013Airframe (DA 42)
2012-17-07WingsOct 11, 2012Airframe (DA 42)Certain serial numbers: 42.006–42.008; 42.010; 42.012–42.014; 42.016–42.033; 42.035–42.043; 42.045; …
2011-11-07Diamond Aircraft Industries GmbH Model DA 42 AirplanesJul 6, 2011Airframe (DA 42)
2011-10-13Diamond Aircraft Industries GmbH Models DA 42, DA 42 NG, and DA 42 M-NG AirplanesJun 17, 2011Airframe (DA 42)
2008-23-08Diamond Aircraft Industries GmbH Model DA 42 AirplanesDec 22, 2008Airframe (DA 42)Serial numbers per Diamond Aircraft Industries GmbH Mandatory Service Bulletin No. MSB-42-058. Only with: Applies to airplanes with Thielert TAE125-01 engines installed, except those with engines listed in MSB-42-058 installed with wedge locking washers and bonded-in bolts.
2008-16-20Diamond Aircraft Industries GmbH Model DA 42 AirplanesSep 17, 2008Airframe (DA 42)Only with: Aileron bellcranks P/N DA4-2717-50-00 installed.
2007-23-14Diamond Aircraft Industries Model DA 42 AirplanesDec 26, 2007Airframe (DA 42)
2007-13-16Diamond Aircraft Industries GmbH Model DA 42 AirplanesAug 10, 2007Airframe (DA 42)Certain serial numbers: DA 42 42.004–on
2007-12-24Diamond Aircraft Industries Model DA 42 AirplanesJul 19, 2007Airframe (DA 42)Certain serial numbers: DA 42 42.004–42.129; DA 42 42.177; DA 42 42.AC001
2007-12-05Diamond Aircraft Industries GmbH Model DA 42 AirplanesJul 16, 2007Airframe (DA 42)Certain serial numbers: 42.015; 42.028; 42.036; 42.044; 42.055; 42.059; …

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (7)

Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.

  • Flight controls · adjuster · wornApr 20, 2011

    DURING A PRE-FLIGHT INSPECTION, THE PILOT WAS UNABLE TO ADJUST THE RUDDER PEDAL ASSEMBLY TO THE PROPER POSITION ON THE PILOT'S SIDE. UPON INSPECTION, THE TECHNICIAN DISCOVERED THAT THE LEFT RUDDER CABLE HAD WORN THROUGH THE "S" BEND AND BECOME JAMMED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Flight controls · control cable · frayedMar 21, 2011

    DURING AN ANNUAL INSP, THE AFT RUDDER CABLE, PN-CA1-4060 WAS FOUND CHAFED AND WORN WERE IT EXITS THE PLASTIC TUBING BELOW THE RUDDER HINGE LINE. ON THIS OPERATORS FLEET OF 10 ACFT, THIS HAS BECOME A FREQUENT PROBLEM.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Flight controls · pedal · crackedMar 1, 2011

    DURING PREFLIGHT, THE FLIGHT CREW NOTICED THAT THE RUDDER PEDALS WERE NO LONGER SYMMETRICAL COMPARED TO EACH OTHER. A MAINTENANCE TECHNICIAN INSPECTED THE CO-PILOT’S LH PEDAL (P/N-DA4-2723-35-00) AND NOTICED THAT THE VERTICAL WEB THAT CONNECTS THE PEDAL TO THE BRAKE MASTER CYLINDER ROD HAD TORN AT…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 7 reports
  • Flight controls · rudder pedal · crackedFeb 28, 2011

    DURING PRE-FLIGHT, CREW NOTICED THAT THE RUDDER PEDAL APPEARED TO BE CROOKED, AT A DIFFERENT ANGLE RELATIVE TO THE OTHER PEDAL. MAINTENANCE PERSONNEL DISCOVERED THAT THE RUDDER PEDAL, P/N-DA4-2723-37-00 WAS CRACKED APPROXIMATELY 2 INCHES LONG WHERE THE BRAKE CYLINDER ACTUATING WEB IS WELDED TO THE…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuel · fuel tank · crackedDec 10, 2010

    DURING AN ANNUAL INSP, THE TECH NOTICED A WET FUEL STAIN UNDER THE LT AUX FUEL TANK. WHEN THE TANK WAS REMOVED, THE TANK WAS FOUND TO BE CRACKED AROUND SEVERAL OF THE AFT SPOT WELD LOCATION ON THE LOWER AFT SURFACE OF THE TANK.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Landing gear · retaining clip · missingDec 14, 2007

    DURING PREFLIGHT THE PILOT NOTICED THAT THE LMG DOWNLOCK PIN (P/N-D60-3237-11-34) HAD NO RETAINING CLIP(P/N-DIN471-08-VERZ) AND HAD SHIFTED AFT. THE FORWARD DOWNLOCK HOOK WAS COVERING ONE HALF OF THE HOLE SINCE THERE WAS NO PIN TO STOP ITS MOVEMENT. THE REMAINING CLIP BROKE IN HALF WHEN IT WAS…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Landing gear · retaining clip · missingDec 14, 2007

    DURING PREFLIGHT THE PILOT NOTICED THAT THE LMG DOWNLOCK PIN (P/N-D60-3237-11-34) HAD NO RETAINING CLIP(P/N-DIN471-08-VERZ) AND HAD SHIFTED AFT. THE FORWARD DOWNLOCK HOOK WAS COVERING ONE HALF OF THE HOLE SINCE THERE WAS NO PIN TO STOP ITS MOVEMENT. THE REMAINING CLIP BROKE IN HALF WHEN IT WAS…

    From FAA Service Difficulty Reports; matched by N-number and serial number.

Related aircraft

Show all 8 related aircraft
All 114 registered Diamond DA 42 aircraft

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 19, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 19, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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