# N246CH: Boeing-Vertol 234LR - Status: Valid registration - Airframe: [Boeing-Vertol 234LR](https://openairdocs.org/model/boeing-vertol-234lr) (registry code 1385049, 35 seats) - Engine: [Honeywell AL5512](https://openairdocs.org/engine/honeywell-al5512) (registry code 33903) - Data sheets: [TCDS H9EA](https://openairdocs.org/tcds/H9EA) (Columbia Helicopters Inc.), [TCDS E4NE](https://openairdocs.org/tcds/E4NE) (Honeywell Aerospace US LLC) (OpenAirDocs) - Serial number: MJ017 - Type: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Standard, transport - Airworthiness date: March 1, 2001 - Certificate issued: July 5, 2023 - Expires: July 31, 2030 - Mode S code: A24683 - Registered owner: [Columbia Helicopters Inc](https://openairdocs.org/faa-owner/COLUMBIA%20HELICOPTERS%20INC) - Location: [Aurora, OR](https://openairdocs.org/faa-place/OR/Aurora) - Owner type: Corporation - Owner's area on the map: 45.2403° N, 122.7936° W: Placed by OpenAirDocs at the center of ZIP code 97002, 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=246CH - Page: https://openairdocs.org/aircraft/N246CH 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): 0 in force ### Matched by airframe (Boeing-Vertol 234LR) None in force. ### Matched by engine (Honeywell AL5512) None in force. ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N246CH. ## FAA accident and incident reports None matched to N246CH. ## Service difficulty reports (28) 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 CHIA202508149805](https://openairdocs.org/sdr/CHIA202508149805), Aug 14, 2025: TRANSMISSION. OVERHEATED. THE NR 2 ENGINE TRANSMISSION TEMPERATURE EXCEEDED UPPER TEMPERATURE LIMIT IN FLIGHT RESULTING IN PILOTS INITIATING ENGINE XMSN HOT EMERGENCY PROCEDURES AND RETU - [SDR CHIA202508149804](https://openairdocs.org/sdr/CHIA202508149804), Aug 14, 2025: SWITCH. FAILED. NR 1 ENGINE BEEP SWITCH ON THE LT COLLECTIVE BECAME INTERMITTENTLY UNRESPONSIVE IN FLIGHT, RESULTING IN PILOTS INITIATING ENGINE BEEP FAILURE/FREEZE EMERGENCY P - [SDR CHIA202010024717](https://openairdocs.org/sdr/CHIA202010024717), Oct 2, 2020: PUMP. OVERTEMP. AFTER DEPARTING BAGRAM AIRFIELD HYD OVERTEMP LIGHT ON CAUTION ADVISORY PANEL ILLUMINATED ALONG WITH CORRESPONDING SYSTEM 1 HOT LIGHT ILLUMINATING ON THE OVERHEA - [SDR CHIA201905213938](https://openairdocs.org/sdr/CHIA201905213938), May 21, 2019: PRESSURE GAUGE. FAULTY. IN CRUISE FLIGHT UTILITY HYDRAULIC PRESSURE STARTED TO DECREASE BELOW OPERATING LIMITS. FOLLOWED THE EMERGENCY CHECKLIST AND LANDED AT THE NEAREST FOB WITH NO F - [SDR CHIA201904283889](https://openairdocs.org/sdr/CHIA201904283889), May 21, 2019: PRESSURE GAUGE. FAULTY. IN CRUISE FLIGHT UTILITY HYDRAULIC PRESSURE STARTED TO DECREASE BELOW OPERATING LIMITS. FOLLOWED THE EMERGENCY CHECKLIST AND LANDED AT THE NEAREST FOB WITH NO F - [SDR CHIA2019043033850](https://openairdocs.org/sdr/CHIA2019043033850), Mar 31, 2019: SKIN. DAMAGED. IN CRUISE FLIGHT AT 2500' AGL THE AIRCRAFT RECEIVED ONE ROUND ON THE BOTTOM OF AIRCRAFT AT STATION 320 RIGHT SIDE OF THE HOOKWELL. DAMAGE WAS DISCOVERED ON POST - [SDR CHIA201903213828](https://openairdocs.org/sdr/CHIA201903213828), Mar 20, 2019: SKIN. CRACKED. DURING RAMP CHECK IS WAS NOTED VISUALLY THAT THERE WAS A 6+" SKIN CRACK STA 520 BL20L WL+97. VP-000265-19 HAS BEEN CREATED TO DO THE REPAIR. - [SDR CHIA2018111953656](https://openairdocs.org/sdr/CHIA2018111953656), Nov 15, 2018: DECK PLATE. CRACKED. DURING RAMP CHECK IT WAS NOTED THAT THE L/H SIDE CANTED DECK WL +119 LH CAP REPAIR STA 533 WAS CRACKED. REPAIRED. - [SDR CHIA201809223520](https://openairdocs.org/sdr/CHIA201809223520), Sep 22, 2018: GENERATOR. OVERHEATED. WHILE REPOSITIONING FROM ROMEO RAMP TO THE SLING LOAD AREA THE NR 1 GEN HOT LIGHT ILLUMINATED. FOLLOWED THE EP CHECKLIST GUIDANCE AND TURNED OFF THE NR 1 GEN. I - [SDR CHIA201809243519](https://openairdocs.org/sdr/CHIA201809243519), Sep 21, 2018: HOUSING. CRACKED. WHILE UNDERGOING SCHEDULED MAINTENANCE, UT INSPECTION OF FORWARD PITCH HOUSING ASSEMBLY DISCLOSED A REJECT-ABLE INDICATION OF THE UPPER VERTICAL BEARING LINER B - [SDR CHIA2018081063436](https://openairdocs.org/sdr/CHIA2018081063436), Aug 6, 2018: FLT CONTROLS. FROZEN. DURING APPROACH FOR LANDING, THE THRUST LEVER FROZE, EVEN WHEN MAG BRAKE WAS RELEASED. PILOT WAS ABLE TO LAND ACFT SAFELY . RETURNED TO BASE AND SHUTDOWN FOR IN - [SDR CHIA201803103191](https://openairdocs.org/sdr/CHIA201803103191), Mar 10, 2018: PLATE. CRACKED. CRACKED FINGER PLATE. - [SDR CHIR2017120300000](https://openairdocs.org/sdr/CHIR2017120300000), Dec 3, 2017: HOUSING. CRACKED. SUPPLEMENTAL INFORMATION TO CHIR20171203 AND WILL REQUIRE FURTHER PROCESSING BY THE SDR/SIT QUALITY CONTROL GROUP REFERENCING A TELECON ON 3/12/2019. DISASSEMBL - [SDR CHIR20171203](https://openairdocs.org/sdr/CHIR20171203), Dec 3, 2017: CONNECTOR. BROKEN. PILOTS GOT CAUTION OF XMSN LOW OIL PRESSURE ON APPROACH TO BAGRAM AIRFIELD. THEY COMPLIED WITH EMERGENCY PROCEDURE CHECKLIST, USED THE OIL PRESSURE SELECTOR SWI - [SDR CHIR201708282942](https://openairdocs.org/sdr/CHIR201708282942), Aug 22, 2017: SKIN PANEL. CRACKED. WHILE PERFORMING RAMP CHECK AT THE END OF THE DAY, MECHANIC FOUND 2 CRACKS AT BOTTOM RADIUS OF AIR STAIR ENTRANCE SKIN PANEL STA 124 WL -32 AND STA 122 WL -30. - [SDR CHIR201701122702](https://openairdocs.org/sdr/CHIR201701122702), Jan 3, 2017: WEB. CRACKED. INSPECTION REVEALED A CRACKED FORMER, PN 114S4104-13, AT STA 534, WL +72, BL 5 RIGHT. THIS AREA INCORPORATED A PREVIOUS REPAIR ONCE REMOVED, WEB WAS CRACKED AS - [SDR CHIR20140530001](https://openairdocs.org/sdr/CHIR20140530001), May 27, 2014: ATTACH FITTING. CRACKED. DURING SCHEDULED D CHECK INSPECTION, FOUND CRACK IN LT & RT LG SHOCK STRUT ATTACHMENT FITTING. PN 114S3807-1 & 114S3807-2. 1 CRACK ON EACH FITTING, APPROXIMATEL - [SDR CHIR20140425001](https://openairdocs.org/sdr/CHIR20140425001), Apr 23, 2014: PANEL. CRACKED. DURING A SCHEDULED B5 INSPECTION FOUR EACH C34S2187-9 FITTING SUPPORT PANEL ASSEMBLIES WERE DISCOVERED TO EACH HAVE ONE 1 INCH CRACK, FOUR CRACKS TOTAL. THE LOC - [SDR CHIR20131609001](https://openairdocs.org/sdr/CHIR20131609001), Sep 12, 2013: INVERTER. OUT OF ADJUST. OPERATOR HAS EXPERIENCED ISSUES WITH MALADJUSTED TORQUE INVERTER, SIGNAL CONDITIONERS, ALSO KNOWN AS RATIO DETECTOR POWER SUPPLY, RDPS, ASSOCIATED WITH THE ENGI - [SDR CHIR20130811001](https://openairdocs.org/sdr/CHIR20130811001), Aug 11, 2013: ANGLE. CRACKED. WHILE PERFORMING AN OPPORTUNITY INSPECTION OF THE AIRSTAIR DOOR CABLE PULLEY AT BS 160, NOTED THAT THE WEB & CAP WERE MOVING .0937 WHILE OPENING AND CLOSING THE - [SDR CHIR20132703001](https://openairdocs.org/sdr/CHIR20132703001), Mar 27, 2013: SEAT TRACK. DAMAGED. DURING SCHEDULED B5 INSPECTION, FOUND ELONGATED HOLE FOR COMPANION WAY OBSERVER SEAT (AFT MOUNT BOLT). MOUNT IS INTEGRATED INTO CAP ANGLE. SUSPECT CAUSE OF ELON - [SDR CHIR20132903001](https://openairdocs.org/sdr/CHIR20132903001), Mar 26, 2013: SUPPORT. CRACKED. DURING A SCHEDULED 500HR SIDE FACING SEAT ATTACHMENT STRUCTURE INSPECTION, NOTED CRACKS IN FITTING SUPPORT PANEL ASSY AT BS 220 LBL 49 WL 5, BS 260, LBL 49 WL 5 - [SDR CHIR20122607001](https://openairdocs.org/sdr/CHIR20122607001), Jul 26, 2012: BULKHEAD. CRACKED. DURING B1 INSPECTION, A WEB CRACK WAS DISCOVERED ON FUSELAGE BS 482, WL +29 TO +34, RBL 44 TO 49. REPAIRED IAW TYPE DESIGN HOLDER STRUCTURAL REPAIR MANUAL. - [SDR MJ01709002](https://openairdocs.org/sdr/MJ01709002), Aug 22, 2009: TRUNNION. BINDING. DURING THE "FLIGHT CONTROLS TRAVEL AND FLIGHT BOOST SYS CHECK" AS PART OF THE PRE-FLIGHT CK, COMPANY PILOTS NOTICED ABNORMAL RESISTANCE OF LONGITUDINAL CYCLIC C - [SDR CHIAMJ017/09/002](https://openairdocs.org/sdr/CHIAMJ017%2F09%2F002), Aug 22, 2009: ACTUATOR. RESTRICTED. DURING (FLIGHT CONTROLS TRAVEL AND FLIGHT BOOST SYS CK) AS PART OF PRE-FLIGHT CHECKS (DESCRIBED IN FLIGHT MANUAL PART 1, SECTION 2 PAGE 2-11 ITEM 29 (A)) PILOTS - [SDR MJ01709001](https://openairdocs.org/sdr/MJ01709001), Jun 6, 2009: TRUNNION. CRACKED. THIS CRACK WAS DISCOVERED WHILE PERFORMING MX ON THE RT LANDING GEAR PROXIMITY SWITCH. TRUNNION ASSY - DRAG LINKS- AFT LANDING GEAR RT. (K) - [SDR CHI2003F00004](https://openairdocs.org/sdr/CHI2003F00004), Jul 27, 2003: ENGINE. MAKING METAL. DURING FLIGHT NR 2 ENGINE CHIP LIGHT CAMP ON. PILOTS REF EMERGENCY CHECKLIST AND IT INSTRUCTED THEM TO MONITOR ENGINE OIL PRESSURE AND TEMP, THEN LAND AS SOON A - [SDR CHI2003F00003](https://openairdocs.org/sdr/CHI2003F00003), Jul 23, 2003: ENGINE. MAKING METAL. ENGINE CHIP LIGHT CAME ON IN FLIGHT, PILOTS REFERENCED EMERGENCY CHECKLIST AND IT INSTRUCTED THEM TO MONITOR ENGINE TEMP AND OIL PRESSURE AND TO LAND AS SOON AS ## STCs that may be installed (OpenAirDocs) None matched to this aircraft's models. ## Related - Other Boeing-Vertol 234LR aircraft: https://openairdocs.org/model/boeing-vertol-234lr/aircraft.md - The Honeywell AL5512 engine: https://openairdocs.org/engine/honeywell-al5512.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.