# Service difficulty reports: JASC 2212

A list on [JASC 2212](https://openairdocs.org/jasc/2212.md).

Reports filed under 2212 · Altitude Controller, newest first.

- [SDR 2026FA0000677](https://openairdocs.org/sdr/2026FA0000677.md): Ahrs · failed · Sep 2, 2026 · N916DK · Cessna 560XL
  > SEPTEMBER 1, 2026, WHILE ENROUTE ON A PASSENGERS CHARTER TRIP FROM EYW TO OKC AT 60 N.M. SOUTH OF WAYPOINT JAWJA IN VMC CONDITIONS AT FLT 400 PLANE EXPERIENCED AHRS FAILURE. BOTH PFD SCREENS DISPLAYED RED X FOR AUTOMATION INCLUDING AUTO PILOT, FLIGHT DIRECTOR
- [SDR V6HA201902080001](https://openairdocs.org/sdr/V6HA201902080001.md): Module · intermittent · Feb 5, 2019 · N332CA · Beech 200BEECH
  > ON RE-POSITIONING FLIGHT FOR MAINTENANCE OF OTHER SYSTEM, AIRCRAFT WAS ON AUTO-PILOT AND ALTITUDE HOLD WAS SELECTED AND WAS INDICATED AS ENGAGED. THE AIRCRAFT DRIFTED OFF OF ALTITUDE HOLD SETTING TO A HIGHER ALTITUDE WHICH OCCURRED VERY GRADUALLY. UPON ARRIV
- [SDR HYIA2014040400002](https://openairdocs.org/sdr/HYIA2014040400002.md): Sensor · failed · Apr 4, 2014 · N3249M · Cessna 402C
  > AUTOPILOT COMPUTER CIRCUIT BREAKER TRIPPED WITH A HOT ELECTRICAL ODOR IN CABIN. INSPECTED & FOUND ODOR FROM ALTITUDE SENSOR. DISCONNECTED AUTOPILOT SYS.
- [SDR XTTA09030918](https://openairdocs.org/sdr/XTTA09030918.md): Autopilot Sys · shorted · Sep 3, 2009 · N21WT · Cessna 421B
  > ON APPROACH, A FEW WISPS OF SMOKE WAS SEEN IN THE COCKPIT EMANATING FROM THE PILOT'S SIDE OF THE INSTRUMENT PANEL. AT THE SAME TIME, AN ELECTRICAL SMOLDERING ODOR WAS DETECTED. THE WISPS OF SMOKE CLEARED WITHIN 20 SECONDS AND NO FURTHER SMOKE WAS VISUALIZED.
- [SDR RMXAN317NA0492009](https://openairdocs.org/sdr/RMXAN317NA0492009.md): Relay · faulty · Apr 9, 2009 · N317NA · Pilats PC1245
  > UPON APPROACH TO LANDING, THE ACFT BEGAN PITCHING UP WITH TRIM RUNAWAY CONDITION. AT THE SAME MOMENT THE TRIM BEGAN THE RUNAWAY CONDITION AN ELECTRONIC BUZZING NOISE WAS HEARD THROUGH THE PILOT'S HEADSET AND CONTINUED UNTIL THE STAB TRIM CIRCUIT BREAKER WAS PU
- [SDR ABXA080056](https://openairdocs.org/sdr/ABXA080056.md): Controller · defective · Feb 14, 2008 · N906AX · Doug DC931
  > ON GROUND AT ALB, NOTED HEAVY ODOR OF BURNING ELECTRICAL EQUIPMENT. AIRED OUT COCKPIT, CLOSED UP AGAIN AND SMELL RETURNED WITHIN TWO MINUTES. FOUND SMELL COMING FROM THE AUTO PILOT CONTROLLER. DEFERRED THE AUTO PILOT SYSTEM. CLEARED DEFERRED ITEM, REPLACED
- [SDR ARWA20080103](https://openairdocs.org/sdr/ARWA20080103.md): Controller · malfunctioned · Jan 25, 2008 · N68041 · Doug DC1010
  > ALTITUDE HOLD SLOW TO ENGAGE. PERFORMED ALTITUDE HOLD SYSTEM OPERATIONAL CHECK IN ACCORDANCE WITH M/M 22-00-03, FOUND NORMAL AT THIS TIME.
- [SDR COMA0760475](https://openairdocs.org/sdr/COMA0760475.md): Computer · malfunctioned · Jul 12, 2007 · N588SW · Cndair CL6002B19
  > FLIGHT 5482 - FAILED TO GET CONFIG MESSAGE ON TAKEOFF. IAPS DEGRADED MESSAGE FOLLOWED. TAKEOFF WAS ABORTED. CHECKED MDC FOR IAPS DEGRADED FAULT HISTORY, WITH NO FAULT CODES DISPLAYED. OPS CHECK OF IAPS GOOD.
- [SDR 0500359926](https://openairdocs.org/sdr/0500359926.md): Computer · malfunctioned · Mar 14, 2005 · N926NW · Doug DC932
  > WHILE CRUISING AT FL340, THE AUTOPILOT PITCH BEGAN TO FLUCTUATE +/- 500 FPM WHILE IN "ALTITUDE HOLD". FLIGHT CREW SUSPECTED ALTERNATE TRIM WAS CAUSING THE DEVIATIONS. COMPLIED WITH COM PROCEDURES FOR RUNAWAY TRIM AND FLUCTUATIONS STOPPED. THEN AGAIN AT FL12
- [SDR HE66094217](https://openairdocs.org/sdr/HE66094217.md): Button · broken · Apr 16, 2004 · N135CR · Urocop EC135T1
  > WHEN ACTIVATING ALT HOLD, THE LIGHT WOULD NOT IGNITE CONFIRMING ALT HOLD WAS ENGAGED.
- [SDR SWIA200312314](https://openairdocs.org/sdr/SWIA200312314.md): Controller · malfunctioned · Aug 22, 2003 · N295SW · Emb EMB120ER
  > AFTER AUTOPILOT IS ENGAGED, ALL PARTS OF AUTOPILOT SYSTEM WORK PROPERLY EXCEPT THE AUTOPILOT WILL NOT CHANGE THE PITCH OF THE AIRPLANE. REPLACED TRANSFER BOX IAW 22-10-1. OPS CHECKS GOOD.
- [SDR HEEA088092](https://openairdocs.org/sdr/HEEA088092.md): Control Unit · damaged · Jul 9, 2003 · Bolkms BK117A1
  > POSSIBLE DAMAGE DUE TO SHORT IN WIRING HARNESS. SENT TO AMERICAN EUROCOPTER CORP. FOR WARRANTY REPAIR.
- [SDR HEEA087791](https://openairdocs.org/sdr/HEEA087791.md): Controller · intermittent · Jun 20, 2003 · N505PH · Skrsky S76C
  > FD SEL SEGMENT BLOCK IS INTERMITTENT. TO BE SENT TO VENDOR FOR REPAIR.
- [SDR HEEA080562](https://openairdocs.org/sdr/HEEA080562.md): Sensor · inoperative · Jul 29, 2002 · N107X · Bell 412
  > ALTITUDE HOLD MODE INOPERATIVE.
- [SDR DHL2001745017](https://openairdocs.org/sdr/DHL2001745017.md): Controller · faulty · Oct 26, 2001 · N745DH · Boeing 727224
  > AUTO PILOT ALT HOLD MODE ON, HOLDS ALT FOR SHORT TIME. ALT DEVIATION OCCURS, INITIALLY USES YOKE TO COMPENSATE, THEN USES EXCESSIVE TRIM INPUTS. REMOVED AND REPLACED AUTO PILOT PITCH CONTROL CHANNEL. TESTED IAW B727 M/M CHAPTER 22-11-01. OPS CHECKS NORMAL
- [SDR DHL2001721008](https://openairdocs.org/sdr/DHL2001721008.md): Autopilot Sys · malfunctioned · Sep 25, 2001 · N721DH · Boeing 727228
  > EACH TIME ALTITUDE HOLD IS DISENGAGED, A/C ABRUPTLY PITCHES UP AND CLIMB AT 500-100 FPM, STAB OUT OF TRIM LIGHT IS NOT ILLUMINATED. COULD NOT DUPLICATE ON GROUND. AUTO PILOT ALTITUDE HOLD CHECKS GOOD IAW B727 M/M 22-11-01. NO HISTORY.
- [SDR DHL2001362018](https://openairdocs.org/sdr/DHL2001362018.md): Computer · faulty · May 30, 2001 · N362DH · Airbus A300B4103
  > PRIOR TO LEVEL OFF, A/P NR 1 DISENGAGED, UPON RE-ENGAGEMENT, CAPT FPI INDICATES NORMAL. HOWEVER, A/C DIDN'T CAPTURE ALT. DISENGAGED A/P AND FLEW BACK TO LEVEL. RE-ENGAGED A/P WOULDN'T CAPTURE ALT. RE-DISCONNECTED AND TURNED ON A/P A THIRD TIME AND A/P FUNC
- [SDR HEEA072488](https://openairdocs.org/sdr/HEEA072488.md): Control Unit · failed · Apr 11, 2001 · N3893L · Bell 412
  > NR 2 HELIPILOT WILL NOT CYCLE AFCS CAUTION LIGHT WITH HELIPILOT ON AND TURNING HELIPILOT NR 2 ON AND OFF.
- [SDR DHL2001367002](https://openairdocs.org/sdr/DHL2001367002.md): Autopilot Sys · malfunctioned · Apr 5, 2001 · N367DH · Airbus A300B4203
  > AT FL 290 NR 2 AUTOPILOT LEVELS OFF 200 FT HIGH THEN CONTINUES TO DRIFT HIGHER. NR 1 A/P NORMAL. PERFORMED A/P COMPLEMENTARY TEST AND SYSTEM OP TEST ON NR 2 A/P. SYSTEM CHECKS OK PER MM 22-12-01. NO FAULT CODES NOTED.
- [SDR AU010271](https://openairdocs.org/sdr/AU010271.md): Warning System · failed · Mar 12, 2001 · Fokker F28MK1000
  > (AUS) ALTITUDE ALERT SYSTEM FAILED. ALTITUDE PRESELECT COUPLER CHANGED.
- [SDR SWAA000033](https://openairdocs.org/sdr/SWAA000033.md): Sensor · inoperative · Jan 4, 2000 · N512SW · Boeing 7375H4
  > WHEN AUTOPILOT ENGAGED, ACFT WOULD NOT HOLD ALTITUDE (RAPID NOSE DOWN TRIM). REMOVED AND REPLACED ELEVATOR NEUTRAL SHIFT SENSOR PER MM.
- [SDR AU990308](https://openairdocs.org/sdr/AU990308.md): Actuator · binding · Mar 1, 1999 · Aerosp SA365C
  > (AUS) AUTOPILOT COMPENSATION ACTUATOR BINDING.
- [SDR HEEA060105](https://openairdocs.org/sdr/HEEA060105.md): Sensor · erratic · Jan 21, 1999 · N59805 · Bell 214ST
  > ALTITUDE SENSOR ERRATIC ABOVE 1,000 FEET.
- [SDR 99ZZZX672](https://openairdocs.org/sdr/99ZZZX672.md): Compensator · leaking · Jan 19, 1999 · N273RA · Israel ASTRASPX
  > THIS UNIT FAILED PRESSURE TEST DURING AN INSPECTION. THIS IS A KNOWN PROBLEM. UNIT MUST HOLD APPROXIMATELY 40 PSI FOR 3 HOURS AND CAN ONLY LEAK DOWN 5 PSI DURING THIS TIME. THIS UNIT WENT TO ZERO PSI IN 1.5 HOURS.
- [SDR HEEA0014528](https://openairdocs.org/sdr/HEEA0014528.md): Sensor · malfunctioned · Jun 4, 1998 · N107X · Bell 412
  > AUTOPILOT PORPOISES IN PITCH OR ALTIMETER OR VSI MODE.
- [SDR HEEA0014522](https://openairdocs.org/sdr/HEEA0014522.md): Sensor · malfunctioned · Jun 4, 1998 · N59806 · Bell 214ST
  > WHEN ATTITUDE HOLD ENGAGED, AIRCRAFT HUNTS 200 FEET TO 300 FEET UP AND DOWN.
- [SDR HEEA0011648](https://openairdocs.org/sdr/HEEA0011648.md): Sensor · malfunction · Oct 22, 1997 · N6957Y · Bell 214ST
  > AIRCRAFT DIVES WHEN ALT HOLD ENGAGED.
- [SDR 9521269972](https://openairdocs.org/sdr/9521269972.md): Controller · malfunctioned · Dec 20, 1995 · N9336 · Doug DC931
  > ON THE FIRST TWO ATTEMPTS TO ENGAGE THE AUTOPILOT SYSTEM, THE AIRCRAFT EXPERIENCED A SLIGHT ROLL. AIRCRAFT OPERATED NORMALLY AFTER ENGAGING THE AUTOPILOT SYSTEM FOR THE THIRD TIME. AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. REPLACED AUTO
- [SDR VTZA96035](https://openairdocs.org/sdr/VTZA96035.md): Controller · failed · Dec 3, 1995 · N302UE · Jetair JETSTM4101
  > IAD-TYS - FLT NR 6160 - DURING CLIMB-OUT, RETURNED TO IAD DUE TO THERE BEING A BURNING SMELL IN THE CABIN. AIRCRAFT LANDED AT IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE AUTO-PILOT CONTROLLER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SER

## 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 = '2212'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/2212/reports

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