- Registered owner
- Rocky Mountain Holdings LLC
- Location
- Greenwood Village, CO
- Owner type
- LLC
- Serial number
- 53446
- Year built
- 2000
- Type
- Rotorcraft
- Engine
- Turbo-shaft
- Airworthiness
- Standard, normal
- Airworthiness date
- September 30, 2000
- Certificate issued
- December 1, 2000
- Expires
- January 31, 2029
- Mode S code
- A4BC82
From the FAA registry file of October 22, 2026. The registry lists only the engine series, so ADs for every Allison 250-C47 model are included below.
On this page
Airworthiness directives that may apply · 49
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1982 | 1 |
|---|---|
| 1996 | 1 |
| 1997 | 1 |
| 1998 | 4 |
| 1999 | 4 |
| 2000 | 6 |
| 2001 | 4 |
| 2002 | 5 |
| 2003 | 4 |
| 2004 | 1 |
| 2005 | 3 |
| 2006 | 2 |
| 2007 | 1 |
| 2008 | 1 |
| 2009 | 4 |
| 2011 | 2 |
| 2012 | 3 |
| 2013 | 5 |
| 2014 | 1 |
| 2015 | 2 |
| 2018 | 1 |
| 2019 | 2 |
| 2021 | 2 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 2 |
See all 72 ADs
Information bulletins that may apply · 8
Advisory, not mandatory.
Historical bulletins · 2
NTSB investigations · 1
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
FAA incident reports · 1
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Service difficulty reports · 14
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR QMLA2026072520049Dual Tachometer · degradedNEEDLES ON DUAL TACH NOT ALIGNED WHILE RUNNING. FADEC DEGRADED/RESTART FAULT LIGHT ILLUMINATED AFTER STARTUP. REMOVED AND REPLACED DEFECTIVE DUAL TACH GAUGE.SDR QMLA2026071420046Elec Connector · pulledRESTART FAULT AND FADEC DEGRADED LIGHTS ILLUMINATED ON TAKE OFF. PULLED FAULT ADAPTOR ELEC CONNECTOR. CLEANED AND REINSTALLED. CLEARED CODE, OPS GROUND RUN GOOD. NO DEFECTS NOTED.SDR QMLA2024070520083Unknown · odorLANDING AT THE HOSPITAL IN LAS VEGAS AND AFTER DROPPING OFF THE PATIENT, THE CREW INFORMED ME THERE WAS A FUEL ODOR IN THE CABIN. I WROTE UP THE DISCREPANCY AND INFORMED THE MAINTENANCE TEAM. AMT INSPECTED AIRCRAFT NO ISSUES FOUND, RTS.SDR QMLA2024061420063Battery · failedAFTER STARTING ENGINE A STRONG SMELL OF SULFUR WAS DETECTED IN COCKPIT. PILOT INSTRUCTED CLINICIAN TO GO OUTSIDE AND VERIFY ANY ODORS FROM AIRCRAFT HE REPORTED ROTTEN EGGS SMELL. PILOT IMMEDIATELY SHUT DOWN AIRCRAFT. START PROCEDURES APPEARED NORMAL VDC DROPPESDR QMLA202402292022Unknown · odorPILOT REPORTED FUEL ODOR IN COCKPIT/CABIN. I INSPECTED ALL FUEL LINES AND FITTINGS IN ENGINE COMPARTMENT NO DEFECTS NOTED. INSPECTED FUEL SUMPS AND CAVITY DRAINS NO DEFECTS NOTED. INSPECTED AFT COMPARTMENT ( BAGGAGE AREA SIDE WALL PANEL ) AND AFT AVIONICS BAY.SDR QMLA2023120220112Unknown · unknownFLIGHT CREW REPORTED FUEL ODOR IN REAR CABIN. I INSPECTED FUEL BOOST PUMP COVERS AND CAVITY DRAINS NO LEAKS NOTED. INSPECTED ALL FUEL LINES INCLUDING VENT LINES IN AFT BAGGAGE AREA LO LEAKS OR DEFECTS NOTED. HAD PILOT RUN ENGINE AT 100% AND INSPECTED ALL FUEL SDR QMLA2022021420010Connector · brokenDURING FLIGHT FULL COMM FAILURE. PILOT WAS APPROACHING CLASS B AIRSPACE WITH PATIENT ONBOARD. HE MADE A PRECAUTIONARY LANDING AT KBVU AND CALLED FOR RESCUE HELICOPTER TO TRANSPORT PATIENT. TROUBLESHOT SYSTEM FOUND CONNECTOR HAD SPUN AND BROKE 1 CONNECTION ON BSDR QMLA2020101520054Fuel Cap · leakingFUEL SMELL IN CABIN DURING CLIMB PHASE OF FLIGHT. FUEL CAP WAS FOUND TO BE LEAKING FUEL. NEW FUEL CAP PN 206-362-002-103 IS BEING INSTALLED.SDR QMLA2020052720021Gearbox · making metalON TAKEOFF FROM THE AIRPORT THE PILOT HAD THE MAIN ROTOR GEARBOX CHIP INDICATION ILLUMINATE. THE PILOT LANDED BACK AT THE HANGAR, LESS THAN ONE MINUTE OF FLIGHT PUT ON THE AIRCRAFT. MECHANIC REMOVED CHIP DETECTOR AND FOUND APPROXIMATELY 20 METAL CHIPS ON DETSDR QMLA2017090117087Angle · crackedDURING INSPECTION OF THE CABIN STRUCTURE, FOUND CRACKS IN THE ANGLE BRACKETS THAT TIE THE AFT CABIN BULKHEAD AT BS 146 TO RT & LT SIDES OF ROOF BEAM.SDR QMLA2017082317083Pressure Switch · failedPARAMEDIC ADVISED STRANGE BURNING ODOR WITH FUMES AND POSSIBLE SMOKE IN CABIN. TURNED OFF THE AIR CONDITIONER AND VENTED THE COCKPIT AND CABIN WHICH REMEDIED THE SITUATION. FOUND PRESSURE SWITCH BLOWN APART IN PIECES, RELEASING ALL OF THE FREON FROM THE SYSTESDR QMLA2014032714032Compressor · crackedDURING ACFT AIRWORTHINESS CHECK, A 3/8 INCH CRACK WAS NOTED ON THE RT SIDE OF THE ENGINE COMPRESSOR ASSEMBLY IN THE COMPRESSOR HOUSING.SDR QMLA2011120111115Transmission · making metalTHE MECHANIC FOUND DURING A ROUTINE INSPECTION, A LARGE AMOUNT OF METAL ON THE TRANSMISSION CHIP DETECTOR. THE ACFT WAS PULLED FROM SERVICE. THERE HAVE BEEN MULTIPLE CHIP EVENTS FOR THIS TRANSMISSION LEADING UP TO THIS CURRENT EVENT. THIS ACFT IS CURRENTLSDR QMLA2011030111031Unknown · odorUPON TAKEOFF, PILOT AND FLIGHT NURSE DETECTED PRESENCE OF FUMES IN THE ACFT. ABORTED TAKEOFF AND SPENT A FEW MOMENTS TRYING TO ASCERTAIN THE SOURCE. THE UNPLEASANT ODOR HAD DISAPPATED AND A SOURCE COULD NOT BE FOUND. RECALLED THAT THE DAY PILOT MENTIONED TH
STCs that may be installed · 327
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
See all 327 STCs