# Service difficulty reports: JASC 3431

A list on [JASC 3431](https://openairdocs.org/jasc/3431.md).

Reports filed under 3431 · Localizer/VOR System, newest first.

Page 1 of 3 · 129 reports

- [SDR CALA2026091519455](https://openairdocs.org/sdr/CALA2026091519455.md): Antenna · damaged · Sep 1, 2026 · N27404 · Boeing 7379
  > BIRD STRIKE ON CLIMBOUT APROX 3000 FT PERFORMED INITIAL EVALUATION IAW AMM TASK 05-51-18. FOUND EXTERNAL DAMAGE IN NOSE RADOME AND FUSELAGE SKIN IN SECTION 41 BETWEEN FUS STA 130 AND FUS STA 178. PERFORMED BIRD STRIKE AND IN-FLIGHT HAIL STRIKE CONDITIONAL INS
- [SDR DALA2026082004757](https://openairdocs.org/sdr/DALA2026082004757.md): Localizer · faulted · Aug 17, 2026 · N967AT · Boeing 717200
  > FOUND A NON-COMPLIANCE ISSUE RELATED TO SATELLITE-BASED AUGMENTATION SYSTEM (SBAS) MESSAGE TYPE 6, COMPLIED WITH ER/A 636183-14. (6771160) (AIRCRAFT GROUNDED).
- [SDR CALA2026072017894](https://openairdocs.org/sdr/CALA2026072017894.md): Ils System · faulted · Jul 17, 2026 · N803UA · Airbus A319131
  > NAV LS TUNING DISAGREE SYSTEM RESET DIDNT WORK INFLIGHT FAULT WAS NOT PRESENT ON ARRIVAL. VERIFIED FREQUENCIES ON LS WERE TUNED TO SAME FREQ PREFORMED BITE TEST OF MMR 1 & 2 IAW AMM 34-36-00-740-006-A NO FAULTS. PREFORMED AFS TEST & LAND TEST IAW AMM 22-97-00-
- [SDR QXEA2026070600149](https://openairdocs.org/sdr/QXEA2026070600149.md): Ils System · faulted · Jun 28, 2026 · N670QX · Emb ERJ170200LR
  > FLIGHT 2126. ILS MISSED APPRAOCH DUE TO CAPTAINS SIDE LOC NO CAPTURING. SOURCED FO SIDE FO FLOWN NORMAL. ON LANDING MASTER CAUTION FD LATERAL MODE OFF. REMOVED FROM SERVICE. INTERROGATED CMC, FOUND FAULT CODE 22110045FB1/2 AND 22110045FA1/2. PERFORMED FIM TASK
- [SDR DALA2026030201422](https://openairdocs.org/sdr/DALA2026030201422.md): Ils System · unreliable · Feb 15, 2026 · N967AT · Boeing 717200
  > ILS IS SOMEWHAT NOT RELIABLE, THEREFORE, AN STC FOR "ILS LOOK-ALIKE" LPV IS BEING DEVELOPED AS A BACK UP FOR ILS. ACCOMPLISHED ER/A 632398-14 (1452682)
- [SDR UIEA2025080801109](https://openairdocs.org/sdr/UIEA2025080801109.md): Control Panel · intermittent · Aug 8, 2025 · N640GT · Boeing 7673S1
  > ILS COURSE KNOB INTERMITTANT. REPLACED ILS CONTROL PANEL. PERFORMED OPS CHECK, TEST OK IAW AMM 34-31-02. AIPC REF. 34-32-02-01.
- [SDR AALA202504170737](https://openairdocs.org/sdr/AALA202504170737.md): Antenna · faulted · Apr 14, 2025 · N300UB · Boeing 7378
  > AIRCRAFT WAS GROUNDED: REPEAT RECURRING ISSUE WITH GEAR WARNING HORN GOES OFF WHEN THROTTLES PULLED BACK, ALONG WITH 3 RED GEAR LIGHTS. HORN CUTOUT WILL SILENCE THE HORN.HAD TO REDUCE SPEED IN CRUISE AND WHEN THRUST WAS REDUCED, THE HORN WENT OFF. REPLACED LR
- [SDR AALA202504175893](https://openairdocs.org/sdr/AALA202504175893.md): Antenna · faulted · Apr 14, 2025 · N300UB · Boeing 7378
  > AIRCRAFT WAS GROUNDED: REPEAT RECURRING ISSUE WITH GEAR WARNING HORN GOES OFF WHEN THROTTLES PULLED BACK, ALONG WITH 3 RED GEAR LIGHTS. HORN CUTOUT WILL SILENCE THE HORN.HAD TO REDUCE SPEED IN CRUISE AND WHEN THRUST WAS REDUCED, THE HORN WENT OFF. REPLACED LR
- [SDR HNAA2025031700187](https://openairdocs.org/sdr/HNAA2025031700187.md): Radio Altimeter · abnormal · Mar 16, 2025 · N691AE · Emb EMB145LR
  > ON DESCENT FROM 15,000FT HAD MULTIPLE CONSTANT GPWS CALL OUT S THAT WOULD NOT STOP. DID NOT CLEAR UNTIL ROUGHLY 2,000FT WITH GEAR DOWN. FACT 16MAR25 14:21 PHL REMOVED AND REPLACED RADIO ALTIMETER IAW AMM 34-31-01. OPS CHECK GOOD. A/C OK FOR SERVICE
- [SDR HNAA2025031700186](https://openairdocs.org/sdr/HNAA2025031700186.md): Radio Altimeter · abnormal · Mar 16, 2025 · N691AE · Emb EMB145LR
  > ON DESCENT FROM 15,000FT HAD MULTIPLE CONSTANT GPWS CALLS OUT THAT WOULD NOT STOP. DID NOT CLEAR UNTIL ROUGHLY 2,000FT WITH GEAR DOWN. FACT 16MAR25 14:21 PHL REMOVED AND REPLACED RADIO ALTIMETER IAW AMM 34-31-01. OPS CHECK GOOD. A/C OK FOR SERVICE
- [SDR DALA2024120911524](https://openairdocs.org/sdr/DALA2024120911524.md): Transceiver · inoperative · Dec 6, 2024 · N3740C · Boeing 737832
  > SHIP 3740 -DIV- DIVERTED TO PVU (PROVO, UTAH) DUE TO LOSS OF CAPTAIN'S ILS, FD AND HUD ON APPROACH SLC DURING CAT 3 OPERATIONS. PVU CAT 1 OPERATIONS. CORRECTIVE ACTION: REPLACED LEFT RADIO ALTIMETER. OPS CHECKS GOOD.
- [SDR AALA202410041357](https://openairdocs.org/sdr/AALA202410041357.md): Antenna · inoperative · Oct 2, 2024 · N806NN · Boeing 737823
  > AIRCRAFT WAS GROUNDED: SELECTED APPROACH MODE FOR THE ILS 25L AT LAX. LOC STARTED TO CAPTURE WHEN WE LOST BOTH FLIGHT DIRECTORS AND AUTO THROTTLES.AS WELL AT AUTO PILOT.COMMAND A SELECTED. TRIED THE APPROACH AGAIN WITH THE SAME RESULT.DIVERTED TO ONT FOR A VFR
- [SDR DALA2023120409921](https://openairdocs.org/sdr/DALA2023120409921.md): Unknown · unknown · Dec 4, 2023 · N327NB · Airbus A319114
  > SHIP 3127 -DIV- TO IND DUE TO ILS TUNING ISSUE ON APPROACH TO DTW. FMGC RESET WAS NO HELP. CORRECTIVE ACTION: COULD NOT DUPLICATE. PERFORMED AFS LAND TEST, AIRCRAFT RTS. (5059882)
- [SDR OEJA202301240001](https://openairdocs.org/sdr/OEJA202301240001.md): Localizer · faulted · Jan 19, 2023 · N436FL · Raythn 400ARAYTHEON
  > UPON ARRIVAL AT CRE WEATHER WAS REPORTING VV 200 AND LESS THAN 1/4 MILES VIS. OUR LOCALIZER WAS INOP AND WE HAD A NEW CAPTAIN THAT HAD TO USE THE HIGHER PIC MINIMUMS. WE WERE NOT LEGAL TO SHOOT AN APPROACH INTO CRE SO WE ASKED TO DIVER TO MRT
- [SDR OEJA2023012000027](https://openairdocs.org/sdr/OEJA2023012000027.md): Ils System · faulted · Jan 19, 2023 · N436FL · Beech 400A
  > UPON ARRIVAL AT CRE WEATHER WAS REPORTING VV 200 AND LESS THAN 1/4 MILES VIS. OUR LOCALIZER WAS INOP AND WE HAD A NEW CAPTAIN THAT HAD TO USE THE HIGHER PIC MINIMUMS. WE WERE NOT LEGAL TO SHOOT AN APPROACH INTO CRE SO WE ASKED TO DIVERT TO MTR
- [SDR HNAA2022111400302](https://openairdocs.org/sdr/HNAA2022111400302.md): Localizer · faulted · Nov 12, 2022 · N683AE · Emb EMB145LR
  > BOTH LOCALIZER SIGNALS UNRELIABLE ON APPROACH TO FWA. DIVERTED TO DAY. PERFORMED VOR/ILS SYSTEM OPERATIONAL TEST IAW AMM 34-32-00-700-801-A. VOR/ILS SYSTEMS #1 AND #2 OPERATIONAL TESTS PASSED. AIRCRAFT OK FOR SERVICE
- [SDR ASAA2022050838309](https://openairdocs.org/sdr/ASAA2022050838309.md): Wire · loose · May 8, 2022 · N586AS · Boeing 737890
  > REF ASA L/P 60350724 ASA W/O 1906761 - DURING FMCS OPS CHECK FOUND FMCS #1 FAULTING LEFT MMR FOR 9 CONSECUTIVE LEGS. GROUNDED - YES. TROUBLESHOOT PER B737-800 WDM 34-31-11 PAGE 6, SHEET 2, FOUND WIRE W0211-2020B-24 PULLED FROM ITS TERMINAL BLOCK TB1201. TERMIN
- [SDR ASAA2022042238105](https://openairdocs.org/sdr/ASAA2022042238105.md): Vor System · failed · Apr 22, 2022 · N933AK · Boeing 7379
  > WEATHER RADAR DOES NOT WORK IN FLIGHT. ON BOTH NDS WXR FAIL IS ILLUMINATED AND THE RADAR WILL NOT TEST. GROUNDED - YES. CYCLED POWER TO WXDR, OPS RESTORED WX RDR CHECKS OK REF B737-9 AMM 34-31-00.
- [SDR HNAA2022020900069](https://openairdocs.org/sdr/HNAA2022020900069.md): Not Reported · not reported · Feb 7, 2022 · N649PP · Emb EMB145LR
  > PDIS 649 34-32 2749062 07FEB22 CLT CLOSE ON APPROACH TO FAY, BOTH LOC DROPPED OFF WITH RED X ACROSS CDI, SIGNAL WAS VERY WEAK FACT 07FEB22 17:38 CLT PERFORMED VOR/ILS/GS/MB OPS CHECK IAW
- [SDR SWIA202163261](https://openairdocs.org/sdr/SWIA202163261.md): None · unreliable · Dec 28, 2021 · N973SW · Cndair CL6002B19
  > D: DUE TO ODI EVENT THIS ACFT REQUIRES SR. MANAGEMENT APPROVAL TO BE RETURNED TO SERVICE / C: MCI / UNRELIABLE LOCALIZER IN SBN RUNWAY 9R. LOCALIZER WAS ERRATIC ON TWO ATTEMPTS. DEC 29, 2021 STATION: FWA -- RECIEVED APPROVAL FOR RETURN TO SERVICE FROM STEVE
- [SDR YENA2021111000746](https://openairdocs.org/sdr/YENA2021111000746.md): Antenna · failed · Nov 3, 2021 · N339JB · Emb ERJ190100IGW
  > FLT 2618, FLL-JAX(AIR TURN BACK). LANDING GEAR WARNING ANNUNCIATED WITH GEAR UP AT 5000 DURING THE CLIMB. THE WARNING COULD NOT BE SILENCED.; REPLACED #2 R/A RECEIVER ANTENA IAW M/M 34-31-02, ACCOMPLISHED OPS CHECK, FOUND TO BE NORMAL. SEE L/P# 3241737 ITEM
- [SDR HNAA2021022500060](https://openairdocs.org/sdr/HNAA2021022500060.md): Localizer · malfunctioned · Feb 22, 2021 · N669MB · Emb EMB145LR
  > PDIS 669 34-32 2433662 22FEB21 ORF CLOSE LOC WAS ERRONEOUS ON BOTH SIDES FACT 22FEB21 23:45 ROA. PERFORMED VOR/ILS/LOC OPS CHECK IN REF TO AMM TASK 34-32-00-700-801-A. NO FAULTS NOTED. CREW REPORTED OBSERVING ILS WAS WORKING PROPERLY AFTER RESET. STATION R
- [SDR HNAA2021021500053](https://openairdocs.org/sdr/HNAA2021021500053.md): Localizer · erratic · Feb 13, 2021 · N631AE · Emb EMB145LR
  > PDIS 631 34-32 2353451 13FEB21 MDT CLOSE LOCALIZER ERRATIC 12 MILES FROM CHO. GOT WORSE THE CLOSER TO RUNWAY 3. AUTO PILOT COUPLED TO CAPTS SIDE AND ISSUE PERSISTED WITH AUTO PILOT OFF FACT 14FEB21 00:10 MDT CHECKED #1 AND #2 N
- [SDR CALA2020120201317](https://openairdocs.org/sdr/CALA2020120201317.md): Switch · inoperative · Dec 2, 2020 · N33286 · Boeing 737824
  > ON APPROACH KSEA LOC ON CAPT SIDE ID AND LOC INTERMITTENT AND AUTO PILOT DID NOT CAPTURE UPDATE PER CAPT: WITH A/P A ENGAGED AIRCRAFT TURNED RIGHT INSTEAD OF LEFT TO CAPTURE THE LOCALIZER. LOCALIZER INDICATION ALSO INTERMITTENT ON CAPT SIDE. F/O SIDE WORKS G
- [SDR FDEA202005080915](https://openairdocs.org/sdr/FDEA202005080915.md): Unknown · malfunctioned · May 8, 2020 · N153FE · Boeing 7673S2F
  > PDIS 153 22-10 2040 08MAY20 LAX FACT U LOGPAGES:3179707 DURING ILS 25L AT KLAX THE FLIGHT DIRECTOR ERRONEOUSLY DIRECTED A PATH WELL BELOW THE GLIDESLOPE. FMA'S SHOWED LOC AND GS. WE EXECUTED A GO-AROUND. ON SUBSEQUENT APPROACH SYSTEM OPERATED
- [SDR AALA2020043099002](https://openairdocs.org/sdr/AALA2020043099002.md): Module · faulty · Apr 28, 2020 · N727AN · Boeing 777323ER
  > AIRCRAFT NOT GROUNDED: ON NATA BETWEEN 58N040W AND 57N050W AT AOORIX 15002, THE ROLL WINDOW OF THE FMA WENT BLANK. THE LNAV SELECT BUTTON ON MCD ALSO DISENGAGED. ROLL WINDOW ON BOTH CA AND FO SIDE BOTH BLANKED. FLIGHT CREW WAS UNABLE TO RESELECT LNAV. THE FL
- [SDR AALA201905209004](https://openairdocs.org/sdr/AALA201905209004.md): Unknown · malfunctioned · May 19, 2019 · N806NN · Boeing 737823
  > AIRCRAFT NOT GROUNDED: PILOT REPORTED THAT THREE HOURS INTO THE FLIGHT, AMBER VOR 2 FAILURE FLAG APPEARED ON BOTH CA AND FO NAV DISPLAYS. NOTE: WE HAD A GOOD VOR STATION DIALED IN SJN ONLY 35 MILES AWAY 112.3 MHZ VOR 1 RECEIVED VALID SIGNAL BUT VOR 2 DIDNT OR
- [SDR RAIA201812270001](https://openairdocs.org/sdr/RAIA201812270001.md): Localizer · malfunctioned · Dec 27, 2018 · N17138 · Emb EMB145XR
  > LOCALIZER NR 1 AND NR 2 UNRELIABLE AT LAN. LOC NEEDLE WOULD DEFLECT FULL LEFT TO RIGHT INTERMITTENTLY WITHIN 10 MILES TO FIELD. PERFORMED TRPUBLESHOOTING. INSPECTED AND CHECKED ELECTRICAL BONDING OF VOR/LOC ANTENNA, AND COAX CONNECTIONS FROM INU TO VOR/LOC AN
- [SDR AALA201810049001](https://openairdocs.org/sdr/AALA201810049001.md): Receiver · faulty · Sep 28, 2018 · N959NN · Boeing 737823
  > MIA FLT 1182 EN-ROUTE GUA - MIA. THE AIRCRAFT WAS NOT GROUNDED. AROUND 1500 SHORT FINAL RUNWAY 9 MIA, AUTOPILOT ENGAGED, APP MODE ENGAGED. ON LOC AND GS, AIRCRAFT INITIATED A CLIMBING LEFT TURN. FLIGHT DIRECTORS REMAINED CENTERED, GO AROUND INITIATED. SEC
- [SDR ASAA2018092426219](https://openairdocs.org/sdr/ASAA2018092426219.md): Receiver · failed · Sep 20, 2018 · N481AS · Boeing 737990ER
  > AFTER LANDING WHILE TAXIING IN, INTERMITTENT VTK FLAG ON RT SIDE MFD. GROUNDED - YES. VERIFIED FAULT, RT FMC CYCLES ON & OFF. CYCLED MMR NR 2 C/B AND NOW RT FMC OPS NML. FMC SENSOR PAGE SHOWS MMR NR 2 FAIL. FLT FAULTS "G" CDU-R (ARINC RATE INTERMITTENT) & (CDU
- [SDR IPXA2018091433966](https://openairdocs.org/sdr/IPXA2018091433966.md): Mmr · not seated · Sep 8, 2018 · N148UP · Airbus A300F4622R
  > DIVERSION DUE TO ILS SYSTEM NR 1 & NR 2. RESEATED NR 1 & NR 2 MMR NR 1 & NR 2 ILS SYSTEM OPS CHECKS GOOD IAW AMM 34-36-00-0501 OK FOR SERVICE.
- [SDR HALA2018081400377](https://openairdocs.org/sdr/HALA2018081400377.md): Warning Message · false activation · Aug 13, 2018 · N581HA · Boeing 76733A
  > NO LAND 3 FLAG ON AUTO LAND STATUS APPEARED JUST PAST ETP. WOULD NOT RESET. PERFORMED ILS OPERATIONAL TESTS IAW AMM 34-31-00. NO FAULTS NOTED. ALL OPS NORMAL, NO LAND 3 MESSAGE & FLAG DISPLAYED. OK FOR SERVICE.
- [SDR IPXA2018011225417](https://openairdocs.org/sdr/IPXA2018011225417.md): Ils System · inoperative · Jan 10, 2018 · N334UP · Boeing 76734AF
  > FIRST OFFICER ILS GLIDE SLOPE INOPERATIVE. NO AUTOLAND POPPED UP WHEN SELECTING APPROACH MODE ON MCP. SHOT TWO ILS, BOTH SHOW NO FAULTS FOR 180 DAYS. ACP ILS ADJ & TEST IAW 34-31-00-501. OPS & BITE CHECKED GOOD.
- [SDR CA150807002](https://openairdocs.org/sdr/CA150807002.md): Radar · failed · Aug 6, 2015 · Boeing 777233LR
  > (CAN) 12NM OUT ON LOCALIZER 08L, ACFT STARTED WEAVING. FOUND LT RADAR GAIN AT MAX. RIGHT GAIN AT CAL. RETURNED LEFT TO CAL. RT RADAR SYS TESTED IAW AMM 34-43-00-730-803-002.
- [SDR ASMF201510200001](https://openairdocs.org/sdr/ASMF201510200001.md): Warning System · false activation · Aug 5, 2015 · N957AM · Boeing 737800*
  > AIRCRAFT RETURNED TO PLATFORM DUE TO, AFTER START ENGINES THE ILS & GLS LIGHTS TURNED ON IN THE IRS DISPLAY PANEL WHEN MASTER CAUTION PUSHED. PERFORMED THE FIM 34-31 TASK 801 PROCEDURE, NO CONFIRMING FAILURE, TESTED CORRECT.
- [SDR RAIA201504130001](https://openairdocs.org/sdr/RAIA201504130001.md): Localizer · malfunctioned · Apr 13, 2015 · N836HK · Emb EMB145LR
  > NR 1 AND NR 2 DID NOT PICKUP STANDARD APPROACH, REPORTED 4 MILES OFF COURSE. MAINTENANCE REMOVED BOTH VOR ANTENNAS AND INSPECTED, WITH NO DEFECTS NOTED, REINSTALLED ORIGINAL ANTENANAS, OPS CHECK GOOD.
- [SDR SWIA2014112540162](https://openairdocs.org/sdr/SWIA2014112540162.md): Receiver · faulty · Nov 23, 2014 · N703SK · Cndair CL6002C10
  > LOCALIZER RECEIVERS FAIL INTERMITTENTLY. R & R NR 1 AND 2 VIR-432 IAW AMM.
- [SDR SWIA201439252](https://openairdocs.org/sdr/SWIA201439252.md): Localizer · intermittent · Sep 6, 2014 · N929SW · Cndair CL6002B19
  > DURING APPROACH, THE CAPTAIN`S LOCALIZER WAS SEVERELY INTERMITTENT. ATC HAD THE ACFT GO AROUND AND REALIGN TO CAPTURE THE LOCALIZER. PERFORMED FUNCTIONAL TEST OF THE LOCALIZER AND GLIDESLOPE INDICATIONS IAW AMM. OPS CHECKED GOOD.
- [SDR CALA2014071191413](https://openairdocs.org/sdr/CALA2014071191413.md): Ils System · faulted · Jul 5, 2014 · N481UA · Airbus A320232
  > ILS 2 FAULT DISPLAYED ON UPPER ECAM SCREEN. ACCOMPLISHED CHRONIC REVIEW. ACCOMPLISHED MT 34-001. OPERATIONS CHECKED GOOD.
- [SDR COZA20140416041](https://openairdocs.org/sdr/COZA20140416041.md): Control Panel · intermittent · Apr 13, 2014 · N737KA · Boeing 7377BX
  > NR 2 VOR NAVIGATION PANEL INTERMITTENTLY DISPLAYED INCORRECT NUMBERS IN THE ACTIVE FREQUENCY WINDOW, THOUGH THE PANEL, WORKED CORRECTLY OTHERWISE. REPLACED THE DISPLAY AND OPS CHECK NORMAL.
- [SDR COZA20140320039](https://openairdocs.org/sdr/COZA20140320039.md): Display · inoperative · Mar 16, 2014 · N737KA · Boeing 7377BX
  > NR 2 VOR NAVIGATION DISPLAY WENT BLANK. REPLACED DISPLAY AND OPS CHECK NORMAL.
- [SDR CALA2014011490149](https://openairdocs.org/sdr/CALA2014011490149.md): Ils System · inoperative · Jan 14, 2014 · N512UA · Boeing 757222
  > UNABLE TO CLEAR NO LAND 3 ON ASA, LT ILS INOPERATIVE.
- [SDR CHQA20130409107](https://openairdocs.org/sdr/CHQA20130409107.md): Antenna · faulty · Apr 9, 2013 · N289SK · Emb EMB145LR
  > DURING APPROACH, CREW REPORTED ILS 1 AND 2 ERRATIC. THE CREW DIVERTED AND LANDED WITHOUT INCIDENT. ILS 1 AND 2 WERE PLACED ON MEL AND THE AIRCRAFT WAS FERRIED FOR MAINTENANCE. VOR/ILS STABALIZER ANTENNA 1 AND 2 WERE REPLACED. OPERATIONAL CHECKS WERE GOOD.
- [SDR CHQA20130227068](https://openairdocs.org/sdr/CHQA20130227068.md): Ils System · erratic · Feb 27, 2013 · N579RP · Emb EMB145LR
  > CREW REPORTED THAT DURING FLIGHT, BOTH LOCALIZERS BECAME ERRATIC, CLOSED THE AIRCRAFT GOT TO THE STATION. THE CREW DIVERTED AND LANDED WITHOUT INCIDENT. MAINTENANCE RE-RACKED BOTH NAVIGATIONAL UNITS. OPERATIONAL CHECKS OF BOTH NAVIGATION SYSTEMS WERE GOOD W
- [SDR CHQA20130227067](https://openairdocs.org/sdr/CHQA20130227067.md): Ils System · erratic · Feb 27, 2013 · N579RP · Emb EMB145LR
  > CREW REPORTED THAT DURING FLIGHT, BOTH LOCALIZERS BECAME ERRATIC THE CLOSED THE AIRCRAFT GOT TO THE STATION. THE CREW DIVERTED AND LANDED WITHOUT INCIDENT. MAINTENANCE RE-RACKED BOTH NAVIGATIONAL UNITS. OPERATIONAL CHECKS OF BOTH NAVIGATION SYSTEMS WERE GOO
- [SDR USAA2012110700005](https://openairdocs.org/sdr/USAA2012110700005.md): Receiver · faulty · Nov 3, 2012 · N434US · Boeing 7374B7
  > CREW REPORTED THE AIRCRAFT PITCHED NOSE UP AND CLIMBED TO 300 FEET BEFORE WE DISCONNECTED THE AUTO PILOT. THIS OCCURRED TWICE AT GLIDE SLOPE INTERCEPTION. MAINTENANCE REPLACED CAPTAINS NAV RECEIVER AS PER MM 34-31-41-404. NO DEFECTS.
- [SDR UALA2012080904334](https://openairdocs.org/sdr/UALA2012080904334.md): Receiver · malfunctioned · Aug 8, 2012 · N522UA · Boeing 757222
  > NO LAND 3 LIGHT WITH ACRID ODOR IN COCKPIT AND THROUGHOUT CABIN STRONGER IN 1ST CLASS. FOUND CTR ILS RECEIVER SMOKED.
- [SDR FDEA201207032604](https://openairdocs.org/sdr/FDEA201207032604.md): Motor · cracked · Jul 3, 2012 · N566FE · Doug MD1010F
  > LEVEL 2 HYD 3 FAIL. R & R INBD STABILIZER TRIM MOTOR IAW AMM 27-43-01-2, OPS AND LEAK CHECKED GOOD, OK FOR SERVICE.
- [SDR CA120117003](https://openairdocs.org/sdr/CA120117003.md): Localizer · malfunctioned · Jan 15, 2012 · Dhav DHC8102
  > (CAN) CAPTAIN LOCALIZER OUT 1 DEGREE ON APPROACH LT OF CENTERLINE. TEST WERE CARRIED OUT AND FOUND THE NR 1 NAV RECEIVER TO BE AT FAULT. REPLACED NR 1 NAV RECEIVER AND RETURNED ACFT TO SERVICE.
- [SDR UALA2011081004206](https://openairdocs.org/sdr/UALA2011081004206.md): Receiver · malfunctioned · Aug 9, 2011 · N546UA · Boeing 757222
  > CTR ILS FAULT. CTR AND RT ILS RECEIVERS SWAPPED.

Next page: https://openairdocs.org/jasc/3431/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 = '3431'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/3431/reports

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