# Service difficulty reports: JASC 3423

A list on [JASC 3423](https://openairdocs.org/jasc/3423.md).

Reports filed under 3423 · Magnetic Compass, newest first.

Page 1 of 3 · 101 reports

- [SDR 2026F00171](https://openairdocs.org/sdr/2026F00171.md): Light · burned out · Jul 31, 2026 · N920GD · Bnorm BN2AMK3
  > AFTER CARGO DROP-OFF AT EIS AIRPORT PILOT RECEIVED CLEARANCE TO ENTER RUNWAY AND THEN FOR TAKEOFF. AFTER ALIGNING THE AIRCRAFT ON RUNWAY 07 PILOT PROCEEDED TO APPLY TAKEOFF POWER WHEN HE NOTICED SMOKE DEVELOPING ON THE UPPER LEFT CORNER OF THE WINDSHIELD, NEAR
- [SDR QR9R2026040600001](https://openairdocs.org/sdr/QR9R2026040600001.md): Compass · spinning · Apr 6, 2026 · Bolkms BK117C2
  > STANDBY COMPASS SPINS AND LEAKED FLUID DURING START RUN-UP. REMOVED AND REPLACED STANDBY COMPASS IAW AMM 34-23-00, 4-14. COMPLETED COMPASS SWING IAW AMM 34-23-00, 5-2.
- [SDR YENA2026030900277](https://openairdocs.org/sdr/YENA2026030900277.md): Isis · failed · Mar 8, 2026 · N971JT · Airbus A321231
  > FLT # 836 STI-EWR/ EWR -JFK DIVERTED. " AIRCRAFT N971JT OPERATING FLIGHT 836 STI - JFK DIVERTED TO EWR DUE TO STANDBY HORIZON ATTITUDE INDICATOR INOPERATIVE, SHOWING OUT OF ORDER ON THE ISIS DISPLAY. THE INTEGRATED STANDBY INSTRUMENT SYSTEM (ISIS) WAS REPLACED
- [SDR ABXA20260208058](https://openairdocs.org/sdr/ABXA20260208058.md): Compass · malfunctioned · Feb 8, 2026 · N219CY · Boeing 767383
  > DURING TAXI OUT, INTEGRATED STANDBY COMPASS INDICATED DG MODE. AIRCRAFT RETURNED TO BLOCKS (BTB). MAINTENANCE RESET ISU POWER AFTER IRS ALIGNMENT. ALL ISU INDICATIONS NORMAL, REF AMM 34-24-03. AIRCRAFT RETURNED TO SERVICE.
- [SDR HEEA202312010001](https://openairdocs.org/sdr/HEEA202312010001.md): Compass · inoperative · Dec 1, 2023 · N928PH · Skrsky S92A
  > AUTO PILOT FAILED IN FLIGHT DUE TO A HEADING MISCOMPARE.
- [SDR N6WA2023012601](https://openairdocs.org/sdr/N6WA2023012601.md): Compass · out of adjust · Jan 22, 2023 · N543GJ · Cndair CL6002C10
  > STBY COMPASS REQUIRES ADJUSTMENT AFTER INSTALLATION. PERFORMED COMPENSATING STANDBY COMPASS SWING IAW SP-04 AND CRJ AMM 34-22-00
- [SDR YENA2022111801137](https://openairdocs.org/sdr/YENA2022111801137.md): Indicator · failed · Nov 15, 2022 · N4058J · Airbus A321271N
  > ETOPS FLT # 44, LGW-JFK) STDBY ATTITUDE INDICATOR (ISIS) AIRSPEED INDICATION SLOW (LAGGED) DURING INITIAL TAKE OFF ROLL. CA+ FO AIRSPEEDS WERE INDICATING 53 KTS WHEN ISIS STARTED REGISTRING 40 KTS ISIS QUICKLY JUMPED UP TO 20 70 KTS TO MATCH CA+ FO AFD. ISIS A
- [SDR YENA2022072200672](https://openairdocs.org/sdr/YENA2022072200672.md): None · failed · Jul 21, 2022 · N527JL · Airbus A320232
  > FLT#2283, BOS-RDU. (AIRCRAFT PERFORMED AN AIR TURN BACK TO BOS) ' STBY AIRSPEED UNRELIABLE; REMOVED AND REPLACED STBY AIRSPEED INDICATOR IAW AMM 34-21-26.'
- [SDR VNAA202107191111](https://openairdocs.org/sdr/VNAA202107191111.md): Compass · failed · Jul 15, 2021 · N530EA · Cndair CL6002C10
  > ARCED THE SUN SHADE IN THE STANDBY COMPASS LIGHT, REPORTS SPARK, SMOKE, AND VISIBLE SLIGHT DAMAGE TO THE STANDBY COMPASS HOUSING. WHILE PUTTING UP THE SUN SHADE, PART OF SUNSHADE SPARKED AGAINST STANDBY COMPASS. LIGHT WAS ON DIM. SPARKED WITH LITTLE SMOKE, AND
- [SDR JIKA2020070262201](https://openairdocs.org/sdr/JIKA2020070262201.md): Amplifier · shorted · Jun 22, 2020 · N51RP · Beech C99
  > AFTER TAKEOFF FROM KBGR THE PILOT REPORTED THE 26 VAC CIRCUIT BREAKER TRIPPED. AFTER RESET CIRCUIT BREAKER, SMOKE NOTED FROM CIRCUIT BREAKER. PILOT RETURNED TO KBGR AND LANDED WITHOUT INCIDENT. MAINTENANCE TRAVELED TO KBGR AND INSPECTED THE COMPASS SYSTEM A
- [SDR N6WA20190215401](https://openairdocs.org/sdr/N6WA20190215401.md): Compass · out of adjust · Feb 14, 2019 · N159GJ · Cndair CL6002C10
  > STANDBY COMPASS REQUIES ADJUSTMENT AFTER REPLACEMENT. ADJUSTED STANDBY COMPASS IAW CRJ 700 AMM 34-22-01 OPS CHECK GOOD.
- [SDR 9EKA20181120004](https://openairdocs.org/sdr/9EKA20181120004.md): Compass · failed · Nov 20, 2018 · N902R · Snias SA330J
  > AIRCRAFT N902R AND CREW WERE FLYING A ROUTINE VERTICAL REPLENISHMENT MISSION IN THE SOUTH PACIFIC OCEAN. WEATHER WAS CLEAR AND 28 DEGREES CELSIUS. A LITTLE OVER ONE HOUR INTO THE FLIGHT THE FLIGHT CREW DECLARED TO THE SHIP THAT THEY COULD SMELL SMOKE IN THE CO
- [SDR DBCA2018062920003](https://openairdocs.org/sdr/DBCA2018062920003.md): Switch · stuck · Jun 22, 2018 · N210CM · Cessna 560CESSNA
  > DURING DEPARTURE TAXI, CREW NOTICED THE COPILOT PFD BUTTON STUCK IN TEST MODE. CREW RETURNED TO BLOCKS. MAINTENANCE CLEANED THE SELECTOR SWITCH. OPS CHECKED GOOD.
- [SDR HALA2017032800089](https://openairdocs.org/sdr/HALA2017032800089.md): Director · malfunctioned · Mar 28, 2017 · N583HA · Boeing 76733A
  > FIRST OFFICERS FLIGHT DIRECTOR DISAPPEARED ON APPROACH. SELECTED CENTER FLT DIRECTOR SOURCE, OPS OK. CLEANED & RERACKED SYM GEN R CONNECTION. PERFORMED FIM 34-22-00/101, NO FAULTS NOTED. PERFORMED MCDP GROUND TEST 30 & 59 NO FAULTS NOTED, SYS OPS NORMAL OK F
- [SDR 9JLA2016112212119](https://openairdocs.org/sdr/9JLA2016112212119.md): Compass · leaking · Jun 4, 2016 · N202CW · Cessna 560CESSNA
  > FLIGHT CREW REPORTED FLUID LEAKING FROM NON-STABILIZED MAGNETIC COMPASS. REMOVED UNIT AND INSTALLED NEW UNIT
- [SDR K11A2015060872601](https://openairdocs.org/sdr/K11A2015060872601.md): Compass · precesses · Jun 8, 2015 · N726CK · Boeing 7272M7
  > NR 2 COMPASS PRECESSED 30 DEGREES, RETURN TO DEPARTURE.
- [SDR HALA2015011400009](https://openairdocs.org/sdr/HALA2015011400009.md): Compass · smoke · Jan 14, 2015 · N388HA · Airbus A330243
  > DURING CLIMB, ODOR OF BURNING RUBBER APPARENT. SOON AFTER SMOKE EMINATED FROM STANDBY COMPASS HOUSING. SWITCHED OFF STBY COMPASS LIGHT WHICH WAS SELECTED ON. CB E75 TRIPPED SHORTLY THEREAFTER. SMOKE DISSIPATED AFTER STBY COMPASS LIGHT WAS SWITCHED OFF. DE
- [SDR CA150909004](https://openairdocs.org/sdr/CA150909004.md): Compass · leaking · Jul 29, 2014 · Beech 200BEECH
  > (CAN) DURING CLIMB, AS THE CABIN ALTITUDE ROSE, THE MAGNETIC COMPASS RUPTURED, LEAKING FLUID INTO THE COCKPIT IN THE THROTTLE AREA. UPON RETURN, THE COMPASS WAS DEFERRED, AND THEN SUBSEQUENTLY REPLACED WITH A SERVICEABLE UNIT. AS THE COMPASS FLUID IS COMBUSTIB
- [SDR YYFA201306110001](https://openairdocs.org/sdr/YYFA201306110001.md): Adi · failed · Jun 11, 2013 · N305FA · Doug DC983
  > CAPTAIN ADI INDICATOR TUMBLED ENROUTE. QRL DID NOT SOLVE ISSUE.
- [SDR HNAA2012100100987](https://openairdocs.org/sdr/HNAA2012100100987.md): Controller · failed · Oct 1, 2012 · N941HA · Dhav DHC8102
  > IN FLIGHT, ACFT LOST BOTH YAW DAMPER CARROTS, RT AUTO-PILOT CARROT, F/O FLIGHT DIRECTOR FLAGGED AND ALTITUDE SELECT INOPERATIVE ON CAPTAINS SIDE. FLIGHT DATA INVALID MESSAGE ON CAPTAINS SIDE. R & R AFCS CONTROLLER. OPS CHECKED GOOD IAW SPZ8000. GROUND MX TEST
- [SDR 2011FA0000546](https://openairdocs.org/sdr/2011FA0000546.md): Bearing · noisy · Aug 10, 2011 · N115BB · Cessna 525
  > NR 2 COMPASS SYS PRECESSING. ON INITIAL POWER ON NR 2 GYRO (KG-102A) BEARINGS SOUND NORMAL. 15 MINUTES LATER BEARINGS SOUND LIKE GRAVEL.
- [SDR VNAA2011051200004](https://openairdocs.org/sdr/VNAA2011051200004.md): Compass · damaged · May 8, 2011 · N213PS · Cndair CL6002B19
  > AT CLT, WITH POWER ON AIRCRAFT, LEFT WINDSHIELD ARCED TO STANDBY COMPASS FROM SUNVISOR. MAINTENANCE INSPECTED, RESET POPPED CIRCUIT BREAKER, REMOVED AND REPLACED STANDBY COMPASS AND MOUNT BRACKET AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANUALS. AIRCR
- [SDR CA101209012](https://openairdocs.org/sdr/CA101209012.md): Compass · inoperative · Dec 1, 2010 · Piper PA22150
  > (CAN) WHEN SWINGING THE COMPASS THE EAST WEST ADJUSTMENT WAS NON RESPONSIVE COMPASS REPLACED WITH A NEW UNIT (TC# 20101209012)
- [SDR CA101027011](https://openairdocs.org/sdr/CA101027011.md): Compass · misinstalled · Oct 27, 2010 · Bombdr DHC8400
  > (CAN) C 12 COMPASS WHEN INSTALLED DID NOT FUNCTION, FOUND ISSUES WITH WIRING. THIS AREA WAS NOT TOUCHED DURING INSTALLATION.
- [SDR HALA2010010600008](https://openairdocs.org/sdr/HALA2010010600008.md): Unknown · unknown · Jan 6, 2010 · N592HA · Boeing 7673CB
  > ETOPS SIGNIFICANT SYS - FD WOULD NOT GO TO TO/TO/FD (FMA) WHEN IRS'S ALIGNED AP LIGHTS LOC & APP ON. RESET LT & RT MODE CONT PNL C/B'S. OPS CHECK OK IAW MM 34-22-03 & MCDP GND TEST 30 LMP STATUS TO REMAIN IN "LAND 3" MODE.
- [SDR IXXA090054O](https://openairdocs.org/sdr/IXXA090054O.md): Rmi · defective · Sep 30, 2009 · N822BX · Doug DC871F
  > DURING CRUISE, THE COMPASS CARD ON NR 2 RADIO MAGNETIC INDICATOR FROZE IN POSITION. AFTER SEVERAL MINUTES THE COMPASS CARD STARTED MOVING BUT IS 180 DEGREE OFF OF AIRCRAFT HEADING. THE CREW RETURNED TO KLRD WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED NR 2 R
- [SDR IXXA090047O](https://openairdocs.org/sdr/IXXA090047O.md): Amplifier · defective · Sep 3, 2009 · N799AL · Doug DC862F
  > DURING CLIMB OUT, NR 2 COMPASS SYS PRECESSED EXCESSIVELY. CREW RETURNED TO DEPARTURE WITHOUT FURTHER INCIDENT. MX REPLACED NR 2 INSTRUMENT AMP RACK. OPS CHECK GOOD IAW MM 34-20-2. ACFT WAS RETURNED TO SERVICE.
- [SDR 2009FA0000848](https://openairdocs.org/sdr/2009FA0000848.md): Compass · mismanufactured · Jul 30, 2009
  > ALL NEW AIRCRAFT ALL NEW REPLACEMENT COMPASSES DELIVERED IN APPROX THE LAST 1.5 YEARS HAVE DEVELOPED BUBBLES IN THE FLUID, REQUIRING REPLACEMENT. COMPASSES WITH BUBBLES USE TO BE A VERY RARE OCCURRENCE. HAVE REPLACED OVER 25 COMPASSES THIS YEAR. ALL LESS TH
- [SDR HNAA2009071600220](https://openairdocs.org/sdr/HNAA2009071600220.md): Compass · smoke · Jul 15, 2009 · N930HA · Dhav DHC8102
  > DC BUSS CAUTION LIGHT ILLUMINATED AFTER STARTING NR 1 ENG FOLLOWED BY SMOKE COMING FROM CTR CONSOLE COMPASS.
- [SDR DL76L090828](https://openairdocs.org/sdr/DL76L090828.md): Compass · malfunctioned · May 4, 2009 · N195DN · Boeing 767332
  > CAPT RMDI COMPASS CARD CONSTANT ROTATES SWAPPED RDMI W/FO RDMI. CAPT RMDI OPN NORMAL. FWD F/O, RT RMDI TO MCO/PLAC PER MEL 34-22-03A.
- [SDR HALA2009033100118](https://openairdocs.org/sdr/HALA2009033100118.md): Eadi · inoperative · Mar 31, 2009 · N582HA · Boeing 76733A
  > ETOPS SIGNIFICANT SYSTEM, ADI SKY, GOES BLACK INTERMITTENTLY (EFI SWITCH WHEN SELECTED MADE NO DIFFERENCE). REMOVED AND INSTALLED SERVICEABLE F/O EADI PER AMM 34-22-03. OPS CK GOOD. OK TO CONTINUE.
- [SDR IXXA080025O](https://openairdocs.org/sdr/IXXA080025O.md): Compass · defective · May 29, 2008 · N71CX · Doug DC862F
  > DURING CRUISE FROM KBWI, THE CREW PERFORMED COMPASS RATING CHECK, BOTH COMPASS SYSTEM HAD EXCESSIVE DRIFT (20 DEGREE IN 30 MIN). THE CREW LANDED IN CYYR WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REMOVED AND REPLACED FOG GYRO COMPASS SYSTEM. OPERATIONAL CH
- [SDR XN0A1314](https://openairdocs.org/sdr/XN0A1314.md): Compass · malfunctioned · Mar 29, 2006 · N224KW · Airbus A300B4203
  > ON TAXI OUT, NR 1 COMPASS FLAG IN VIEW. CAN NOT DUPLICATE, NO FLAGS AT THIS TIME, CHECKED COUPLERS AND PLATFORMS ALL NORMAL IN RACKS, OPS CHECKS NORMAL IAW 300 AMM CHAPTER 34-21-00.
- [SDR P5CA0601431](https://openairdocs.org/sdr/P5CA0601431.md): Coupler · defective · Jan 15, 2006 · N920FT · Boeing 747249F
  > DURING APPROACH, CAPTAIN'S HSI AND F/O'S RMI FLAGS IN VIEW. REPLACED COMPASS COUPLER PER AMM 34-21-03. CHECKS OK.
- [SDR P5CA0601430](https://openairdocs.org/sdr/P5CA0601430.md): Coupler · failed · Jan 13, 2006 · N920FT · Boeing 747249F
  > CAPTAIN'S COMPASS SYSTEM HAS TO BE SLAVED EVERY 10 MINUTES. APPEARS THE COMPASS FLUX VALVE IS INOP. REMOVED AND REPLACED NR 1 COMPASS COUPLER AS PER MM 34-21-03. OPS CHECK OK.
- [SDR P5CA0501414](https://openairdocs.org/sdr/P5CA0501414.md): Coupler · defective · Nov 2, 2005 · N508MC · Boeing 747230B
  > FO'S HEADING, FLIGHT DIRECTOR, AND BOTH VOR FLAGS IN RMI CAME INTO VIEW WITH HEADING FLAG IN HSI. REMOVED AND REPLACED NR 2 COMPASS COUPLER IAW AMM 34-21-00.
- [SDR IXXA0500091O](https://openairdocs.org/sdr/IXXA0500091O.md): Fiber Optic Gyro · inoperative · Aug 10, 2005 · N604BX · Doug DC873F
  > DURING CLIMB-OUT FROM KTOL PILOTS HSI/ADHI WAS INOP, INFORMATION WAS LOST. AFTER CREW RESET CIRCUIT BREAKERS ADHI RETURNED THEN WENT BLANK. CREW RETURNED AIRCRAFT TO KTOL AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 1 FOG. PERFORMED
- [SDR ASMF200507024](https://openairdocs.org/sdr/ASMF200507024.md): Gyro · failed · Jul 28, 2005 · N881LF · Doug MD83
  > AIRCRAFT PERFORMED A TECHNICAL LANDING AT CUL DUE TO WHEATEAR CONDITIONS AT HMO. AT CUL CAPTAIN REPORTED THAT DURING TURNS THE RADAR GOES OUT OF SERVICE, SO VERTICAL GYRO NR 2 WAS REPLACED IAW MM 34-23-00, TESTED CORRECT. AIRCRAFT WAS DISPATCHED AND CAPTAIN RE
- [SDR GTIA050041](https://openairdocs.org/sdr/GTIA050041.md): Rack · defective · Feb 28, 2005 · N800NK · Doug DC982
  > DURING RTS CHECK FOR LMP UPGRADE, FOUND CAPT`S RMI SYNC INDICATION NOT MOVING, COMPASS CARD DOES NOT MOVE BACK TO COMPASS HEADING, TAIL SWAP WITH AC 808. REMOVED AND REPLACED COMPASS RACK FOR CAPT`S COMPASS SYSTEM. (NR 2) NO HELP, INSTALLED NEW DG. NO HELP,
- [SDR XN0A1228](https://openairdocs.org/sdr/XN0A1228.md): Coupler · defective · Feb 11, 2005 · N473AS · Airbus A300B4203
  > NR 1 COMPASS FLUCTUATING + - 20 DEGREES. REPLACED NR 1 COMPASS COUPLER, OP'S GOOD IAW A300MM 34-21-34.
- [SDR TXER099084](https://openairdocs.org/sdr/TXER099084.md): Compass · broken · Jan 2, 2005 · N588CF · Urocop EC155B
  > COMPASS MOUNT FLANGE BROKEN.
- [SDR UPS04843348](https://openairdocs.org/sdr/UPS04843348.md): Eadi · failed · Oct 8, 2004 · N866UP · Doug DC873F
  > ELECTRICAL BURNING SMELL FROM F/O'S SIDE DURING APPROACH FOR APPROX 10 - 15 SECONDS. ALL FLUORESCENT LIGHTS WERE OFF. TURNED ON ALL LIGHTS, RAN BOTH PACKS, OPERATED ALL NAVIGATION COMPT, INSPECTED ALL WIRES AT F/O'S INSTRUMENT PANEL, NO ELECTRICAL BURNING SM
- [SDR P5CA0401109](https://openairdocs.org/sdr/P5CA0401109.md): Coupler · damaged · Jun 26, 2004 · N355MC · Boeing 747341
  > CAPTAIN COMPASS SYSTEM WOULD NOT SYNC. REPLACED COMPASS COUPLER, OPS CHECK NORMAL AS PER AMM 34-21-00.
- [SDR KBM2003F00108](https://openairdocs.org/sdr/KBM2003F00108.md): Compass · low · Nov 19, 2003 · N73DP · Bell 206B
  > COMPASS FLUID LEVEL LOW. INSTALLED OVERHAULED COMPASS.
- [SDR BAQA090606](https://openairdocs.org/sdr/BAQA090606.md): Compass · malfunctioned · Oct 28, 2003 · N945ME · Bolkms BK117B1
  > COMPASS LIGHT WILL NOT WORK. REPLACED WITH SERVICEABLE ASSET.
- [SDR BAQA090154](https://openairdocs.org/sdr/BAQA090154.md): Compass · inaccurate · Oct 24, 2003 · N5LF · Agusta A119
  > MAG COMPASS 20 DEGREES OFF AND DG INOPERATIVE. REPLACED WITH SERVICEABLE UNIT.
- [SDR KBM2003F00053](https://openairdocs.org/sdr/KBM2003F00053.md): Compass · inaccurate · Oct 10, 2003 · N53SH · Snias AS350B1
  > MAGNETIC COMPASS IS MORE THAN 20 DEGREES OFF. INSTALLED NEW COMPASS.
- [SDR HEEA088514](https://openairdocs.org/sdr/HEEA088514.md): Compass · leaking · Jul 12, 2003 · N30KH · Bell 206L3
  > COMPASS LEAKING.
- [SDR UIEA200300029](https://openairdocs.org/sdr/UIEA200300029.md): Coupler · failed · Jun 25, 2003 · N535MC · Boeing 7472F6B
  > DURING TAKEOFF ROLL, HEADING FLAG ON CAPTAIN'S HSI AND FO'S RMI. AIRCRAFT DIVERTED TO AMS, 23,000 KGS OF FUEL DUMPED. INSTALLED TEMP SPAR WIRE FROM D2206P TO DB105, WING TIP TO WIG DISC, AND REPLACED BOTH COMPASS COUPLER NR 1 AND FO'S RMI IAW MM 34-12-00, RM
- [SDR HEEA084380](https://openairdocs.org/sdr/HEEA084380.md): Compass · oscillates · Feb 11, 2003 · N491PH · Bell 407
  > COMPASS OSCILLLATES DURING COMPASS SWING 5-10 DEGREES. TO BE SENT TO VENDOR FOR REPAIR.

Next page: https://openairdocs.org/jasc/3423/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE jasc_code = '3423'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/3423/reports

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