# Service difficulty reports: JASC 2311

A list on [JASC 2311](https://openairdocs.org/jasc/2311.md).

Reports filed under 2311 · UHF Communications System, newest first.

Page 1 of 2 · 69 reports

- [SDR YENA2026101600985](https://openairdocs.org/sdr/YENA2026101600985.md): Comms Unit · faulted · Oct 15, 2026 · N2193J · Airbus A321271NX
  > FLT # 353, BOS-DUB. (ETOPS) "CA RMP ENTERES 3 WHEN 1 SELECTED OF RADIO FREQ ( RADIO MANAGEMENT PANELS (RMP) RMP 1 RMP 1 KEYS)." (SUPPLEMENTAL INFORMATION TO FOLLOW).
- [SDR I5PA2026091588804](https://openairdocs.org/sdr/I5PA2026091588804.md): Coupler · inoperative · Sep 15, 2026 · N888LT · Boeing 757230
  > ETOPS, LEFT HF ON MEL - REPLACED LH HF COUPLER PER AMM
- [SDR I5PA2026083188807](https://openairdocs.org/sdr/I5PA2026083188807.md): Coupler · inoperative · Aug 31, 2026 · N888LT · Boeing 757230
  > ETOPS SIGNIFICANT REPORT, LT HF INOPERATIVE. ON MEL. REPLACED THE LT HF COUPLER IAW APPLICABLE AMM
- [SDR ASAA2026082666545](https://openairdocs.org/sdr/ASAA2026082666545.md): Coupler · unserviceable · Aug 26, 2026 · N381HA · Airbus A330243
  > ATB. HF NR 1 UNABLE TO TRANSMIT. TRIED NUMEROUS TIMES, NUMEROUS FREQUENCIES AND ALL 3 RNPS UNSUCCESSFUL. GROUNDED - YES. REMOVED AND REPLACED HF 1 COUPLER PER AMM 23-11-36. OPS CHECK GOOD. NO DEFECT NOTED. OK FOR SERVICE.
- [SDR UIEA2026082300786](https://openairdocs.org/sdr/UIEA2026082300786.md): Transceiver · inoperative · Aug 22, 2026 · N851GT · Boeing 74787UF
  > RIGHT HF INOPERATIVE. NO HF CAPABILITY, LT & RT UNABLE TO TRANSMIT. R & R HF ANTENNA COUPLER IAW AMM 23-11-03. R & R RT AND LT HF TRANSCIEVER IAW AMM 23-11-05/401 AND LT & RT HF SYS OPS CHECKS GOOD.
- [SDR QR9R2026072400001](https://openairdocs.org/sdr/QR9R2026072400001.md): Antenna · faulty · Jul 24, 2026 · Bolkms BK117C2
  > RT 5000 TRANSMISSIONS UNREADABLE WHEN TWIST GRIPS WERE IN FLT. AT IDLE, RADIO WAS BARELY READABLE WITH GROUND AND TWR. REMOVED AND REPLACED UHF ANTENNA IAW CMM 145MMS-015 REV B; MOC OKAY.
- [SDR QR9R2026012000001](https://openairdocs.org/sdr/QR9R2026012000001.md): Transceiver · failed · Jan 20, 2026 · Bolkms BK117C2
  > #4 RADIO WOULD NOT XMIT MORE THAN 1 MILE WHEN IN FLIGHT. ON GROUND AT AIRFIELD, RADIO OPERATES OK. AFTER TAKEOFF, WAS UNABLE TO TRANSMIT TO TOWER ON #4 RADIO. TROUBLESHOOTING REVEALED RT-5000 TRANSCEIVER HAD WEAK XMT/RCV. REMOVED AND REPLACED TRANSCEIVER IAW 1
- [SDR QR9R2025092400002](https://openairdocs.org/sdr/QR9R2025092400002.md): Transceiver · failed · Sep 24, 2025 · Bolkms BK117C2
  > UHF RADIO FAILURE IN FLIGHT. TEST FLIGHT EVAL FOUND TRANSMISSION ON WULFSBERG 5000 UNREADABLE. RX PART ON WOLFSBERG WORKS. REMOVED AND REPLACED RT-5000 TRANSCEIVER. MOC SUCCESSFULLY COMPLETED.
- [SDR I5PA2025090859302](https://openairdocs.org/sdr/I5PA2025090859302.md): Transceiver · inoperative · Sep 6, 2025 · N193AN · Boeing 757223
  > RIGHT HF INOPERATIVE. R & R RT HF TRANSCEIVER IAW AMM, OPS CHECK NORMAL.
- [SDR I5PA2025083119302](https://openairdocs.org/sdr/I5PA2025083119302.md): Transceiver · faulty · Aug 31, 2025 · N193AN · Boeing 757223
  > RIGHT HF INOPERATIVE. R & R RT HF TRANSCEIVER IAW AMM, OPS CHECK NORMAL.
- [SDR I5PA2024071088803](https://openairdocs.org/sdr/I5PA2024071088803.md): Transceiver · inoperative · Jul 10, 2024 · N888LT · Boeing 757230
  > LEFT HF INOPERATIVE, REPLACED LH HF TRANSCEIVER
- [SDR YENA2024070100924](https://openairdocs.org/sdr/YENA2024070100924.md): Smoke Detector · false activation · Jun 28, 2024 · N969JT · Airbus A321231
  > FLT#81, JFK-RNO. (AIRCRAFT DECLARED AN EMERGENCY AND DIVERTED TO DEN). ' AFT AVIONICS SMOKE IND IN CRUISE QRH COMPLETED ( AVIONIC SMOKE DETECTION SYSTEM AFT AVIONICS CARGO RACK (LTV)); REMOVED AND REPLACED LTV RACK SMOKE DETECTOR PER AMM 44-20-19. OP CHECK GO
- [SDR HALA2023121108267](https://openairdocs.org/sdr/HALA2023121108267.md): Unknown · unknown · Dec 3, 2023 · N392HA · Airbus A330243
  > ETOPS - #2 HF WILL NOT TUNE AND TX #1 HF HAS DIFFICULTY TUNING. WORKS INTRMITTENT. REMOVED AND REPLACED #2 HF TRANCEIVER TEST OK PER: AMM23-11-33.
- [SDR YENA2023112201443](https://openairdocs.org/sdr/YENA2023112201443.md): Transceiver · failed · Nov 20, 2023 · N4076J · Airbus A321271N
  > FLT#44, LGW-JFK. (ETOPS) ' HF2 TUNING TONE PREVENTS TRANSMITTING WHEN PTT IS DEPRESSED; REMOVED AND REPLACED HF TRANSCEIVER (3RE2) IAW AMM 23-11-33. ALL OPERATIONAL CHECKS OK.'
- [SDR GTIA2023102737563](https://openairdocs.org/sdr/GTIA2023102737563.md): Hf Comm · faulted · Oct 25, 2023 · N652NK · Airbus A320232
  > HF 1 TRANSMITS BUT DOES NOT RECEIVE ( HIGH FREQUENCY (HF) COMMUNICATION SYSTEM ATSU/ACARS AND VHF OPERATE NORMALLY)--
- [SDR NACA2023070900001](https://openairdocs.org/sdr/NACA2023070900001.md): Transceiver · intermittent · Jul 9, 2023 · N379CX · Boeing 767323
  > HF #1 INTERMITTENT TX, RX OK. REMOVED AND REPLACED #1 TRANSCEIVER IAW AMM 23-11-03, OPS CHECK GOOD. NO TRAX INFO AVAILABLE FOR PART.
- [SDR NACA2023070800002](https://openairdocs.org/sdr/NACA2023070800002.md): Unknown · unknown · Jul 8, 2023 · N379CX · Boeing 767323
  > LEFT HF RADIO DOES NOT TX, JUST GOT STATIC OR SIDETONE WHEN TRY TO TX. PERFORMED LH HF OPS CHECK PER AMM 23-11-00, OPS CHECK ON GROUND ABLE TO TRANSMIT AND RECEIVE.
- [SDR YENA2023032200274](https://openairdocs.org/sdr/YENA2023032200274.md): Unknown · unknown · Mar 21, 2023 · N4073J · Airbus A321271N
  > FLT#1620, BOS-LHR. (ETOPS) 'HF RADIO 1 IN INTERMITTENT WORKED EARLY IN FLIGHT BUT TRANSMISSIONS ARE INTERMITTENT BY 30 DEGREES W. RECEPTION SEEMS OK. HF 2 WORKED AS NORMAL ( HF COMMUNICATIONS (LRCS)); PERFORMED OPERATIONAL TEST IAW AMM 23-11-00 TEST OK SYSTEM
- [SDR UIEA2023031000243](https://openairdocs.org/sdr/UIEA2023031000243.md): Transceiver · unknown · Mar 9, 2023 · N493MC · Boeing 74747UF
  > ATB-RH HF RADIO NOT TRANSMITTING.(<P>REMOVED AND REPLACED RH HF TRANSCEIVER PER AMM 23-11-00. OPS CHECK GOOD</P>)
- [SDR CALA2023022000498](https://openairdocs.org/sdr/CALA2023022000498.md): Coupler · none · Feb 20, 2023 · N77520 · Boeing 7378
  > BOTH HF RADIOS INOP. PERFORMED T/S ON HF RADIOS IN REF AVO10462. ALL WIRING AND CONTACTED SFO ON HF1 AND HF2 AT FREQ. 5.547 & 3.413, 3X3 AT 2:36 CONNECTIONS CHECKED OK. PER AVO STEPS 8 AND 9, REMOVED AND AM. OPS CHK OK. PARTS USED: 1924814,QTY:1 REPLACED HF
- [SDR CALA2023010900059](https://openairdocs.org/sdr/CALA2023010900059.md): Hf Comm · inoperative · Jan 9, 2023 · N77520 · Boeing 737824
  > HF RADIOS WILL NOT TRANSMIT BITE BOTH NUMBER 1 AND NUMBER 2 TRANSCEIVERS, BITE TEST OK. GROUND OPS CHK NUMBER 1 AND 2 HF RADIOS CALLING SFO READ LOUD AND CLEAR. R&R NUMBER 1 HF TRANSCEIVER PER PRECAUTIONARY. GROUND OPS CHK OK.
- [SDR ABXA2023010102](https://openairdocs.org/sdr/ABXA2023010102.md): Transceiver · weak · Jan 1, 2023 · N371CM · Boeing 767338
  > RIGHT HF WAS WEAK ON GROUND BUT WORKS IN FLIGHT WHEN IRO OR CAPT TRIED TO XNIT NO TRANSMISSION OVERRED AND NO SIDE TONE WAS HEARD. INITIALLY FO HAD SIDE TONE BUT SOON AFTER HE DID NOT HAVE SIDE TONE. AIRCRAFT DID NOT HAVE ENOUGH FUEL TO CONTINUE ROUTE VIA VHF
- [SDR HALA2022101100271](https://openairdocs.org/sdr/HALA2022101100271.md): None · none · Oct 10, 2022 · N379HA · Airbus A330243
  > ETOPS - #2 HF RADIO WILL NOT TUNE. BITE TEST PASS PER AMM 23-11-00. DUE TO MULTIPLE WRITES UP OF HF #2, REMOVED & INSTALLED NEW HF COUPLER & TRANSCEIVER PER AMM 23-11-36 & AMM 23-11-33. OPS TEST HF#2 PASS PER AMM 23-11-00. BITE TEST HF#2 PASS PER AMM 23-11-00.
- [SDR HALA2022100500267](https://openairdocs.org/sdr/HALA2022100500267.md): None · none · Oct 5, 2022 · N384 · Airbus A330243
  > HF 1 RADIO WOULD NOT TUNE AND IS INOP. REMOVED & REPLACED HF #2 COUPLER PER AMM 23-11-36. OPERATIONAL CHECK OK. COUPLER, ANTENN OFF 43-2311-9-0001 04441 ON 43-2311-9-0001 01196
- [SDR YENA2022090500870](https://openairdocs.org/sdr/YENA2022090500870.md): Coupler · faulty · Sep 4, 2022 · N4062J · Airbus A321271N
  > FLT#7, JFK-LHR. (ETOPS) 'REF TSI MDDR#484335 REPLACE HF 1 COUPLER; PER TSI WO#1201122 REMOVED & REPLACED HF1 (4RE1) IAW AMM 23-11-36. PERFORMED OPS TEST PER AMM 23-11-00 TEST PASSED.'
- [SDR SIMA20220725004](https://openairdocs.org/sdr/SIMA20220725004.md): Rmu · inoperative · Jul 25, 2022 · N661JA · Emb ERJ170200LR
  > THROUGH 8000' RMU 1 OUT - ELECTRICAL BURNING SMELL IN THE COCKPIT. TROUBLESHOT PER FIM 21-20-00-210-801-A. DETERMINED CAUSE OF SMOKE TO BE THE #1 RMU. PULLED AND OCLLARED #1 RMU CIRCUIT BREAKER. REMOVED AND REPLACED #1 RMU IAW AMM 23-81-01. OPS CHECK GOOD. N
- [SDR I5PA2022040375701](https://openairdocs.org/sdr/I5PA2022040375701.md): Transceiver · inoperative · Apr 3, 2022 · N757QM · Boeing 75729J
  > RH HF INOP IN FLIGHT. RH HF TRANSCEIVER FOUND DEFECTIVE AND REPLACED.
- [SDR I5PA2022032588802](https://openairdocs.org/sdr/I5PA2022032588802.md): Coupler · unserviceable · Mar 22, 2022 · N888LT · Boeing 757230
  > IN REF. TO LP 52417 LEFT HF INOP. REMOVED AND REPLACED LEFT HF COUPLER IAW AMM 23-11-01.
- [SDR I5PA2022030388801](https://openairdocs.org/sdr/I5PA2022030388801.md): Coupler · unserviceable · Mar 3, 2022 · N888LT · Boeing 757230
  > IN REF. TO LP 52411 ITEM 2 FOR MEL 23-11-01-02A, LEFT HF INOP. REMOVED AND REPLACED LEFT HF COUPLER IAW AMM 23-11-01.
- [SDR P5CA2021112200423](https://openairdocs.org/sdr/P5CA2021112200423.md): Coupler · none · Nov 22, 2021 · N643GT · Boeing 7673JHF
  > LEFT HF INOP.(<P>T/S PER FIM 23-11-00. REMOVED/REPLACED LH HF COMM ANTENNA COUPLER AMM 23-11-01. MDDR 156972 CLEARED UP.</P>)
- [SDR UIEA2021090601959](https://openairdocs.org/sdr/UIEA2021090601959.md): Transceiver · faulted · Sep 6, 2021 · N473MC · Boeing 74745E
  > AIR TURNBACK DUE TO INABILITY TO ESTABLISH HF CONTACT.(<P> REMOVED AND REPLACED R/H HF TRANSCEIVER. OPS CK GOOD IAW AMM 23-11-05.</P>)
- [SDR HALA2021033100040](https://openairdocs.org/sdr/HALA2021033100040.md): Hf Comm · inoperative · Mar 31, 2021 · N388HA · Airbus A330243
  > ETOPS - UNABLE TO TUNE HF RADIOS 1 AND 2. HOURS LATER DURING FLIGHT RADIO 1 DID CORRECT ITSELF WITHOUT ANY RESET AND TUNE // OPERATIONAL CHECK OK ON HF 1 SYSTEM PER AMM 23-00-710-801A.502110 3/31/21. REMOVE/REPLACE 1 AND 2 HF COUPLER PER AMM 2336-000-801-A. OP
- [SDR HALA2021021900021](https://openairdocs.org/sdr/HALA2021021900021.md): Transceiver · defective · Feb 18, 2021 · N370HA · Airbus A330243
  > ETOPS - HF NR 2 RADIO INOP. REMOVED AND REPLACED HF 2 TRANSCEIVER PER AMM 23-11-00, OPS CK GOOD. OK FOR SERVICE. TRANSCEIVER, HF OFF 43-2311-9-0002 03931 ON 43-2311-9-0002 04833.
- [SDR I5PA2021020188801](https://openairdocs.org/sdr/I5PA2021020188801.md): Coupler · faulty · Feb 1, 2021 · N888LT · Boeing 757230
  > DISCREPANCY R HF INOPERATIVE. CORRECTIVE ACTION R & R R HF COUPLER IAW AMM 23-11-01. OPS CHECK OK.
- [SDR HALA2020111200203](https://openairdocs.org/sdr/HALA2020111200203.md): Transceiver · defective · Nov 11, 2020 · N396HA · Airbus A330243
  > ETOPS-HF RADIOS TUNING INTERMITTENT. NORMAL TOWARDS END OF FLIGHT. REMOVED & REPLACED HF 2 TRANSCEIVER, PER A330 AMM 23-11-33. OPERATIONS TEST GOOD. OK FOR SERVICE. TRANSCEIVER, HF OFF 43-2311-9-0003 00208 ON 43-2311-9-0003 01253.
- [SDR DALA2020061202466](https://openairdocs.org/sdr/DALA2020061202466.md): Antenna · delaminated · Jun 12, 2020 · N3739P · Boeing 737832
  > FOUND NR 2 AIRPHONE ANTENNA DELAMINATED. RMVD NR 2 AIRPHONE ANTENNA PER AMM 23-19 (488979) AND C/W EA 12-477283-14 AMD EA 12-085759-03. PERFORMED DOUBLER REPAIR IAW ERA 586973-14 REV A.
- [SDR HALA2019101000407](https://openairdocs.org/sdr/HALA2019101000407.md): Transceiver · malfunctioned · Oct 9, 2019 · N395HA · Airbus A330243
  > ETOPS SIGNIFICANT SYSTEM - #1 HF RADIO WILL NOT TUNE. // TROUBLESHOT #1 HF RADIO REF A330 TSM 23-11-00-810-819-A. REMOVED AND REPLACED #1 HF TRANSCEIVER REF A330 AMM 23-11. TEST OK.
- [SDR AALA201908069002](https://openairdocs.org/sdr/AALA201908069002.md): Control Unit · failed · Aug 2, 2019 · N950AN · Boeing 737823
  > AIRCRAFT WAS GROUNDED: PILOT REPORTS BOTH HF #1 AND HF #2 RADIOS INOP. UNABLE TO TRANSMIT OR RECIEVE ON SEVERAL DIFFERENT FREQUENCIES. COULD NOT EVEN HEAR A TUNE SIGNAL WHEN INITAILLY KEYING MICROPHONE ON EACH FREQUENCY. MAINTENANCE REMOVED & REPLACED #1 & #2
- [SDR QXEA2019072500282](https://openairdocs.org/sdr/QXEA2019072500282.md): Unknown · malfunctioned · Jul 23, 2019 · N404QX · Bombdr DHC8402
  > POSSIBLE FAILURE OF BOTH RADIOS FOR XMIT ONLY TO TOWER FREQS 119.9 & 120.95. TOWER ONLY COULD NOT HEAR US. ALL OTHER AIRPLANES & GROUND APPROACH COULD HEAR US 5X5. NO OTHER ISSUES. AFTER PARKING AT GATE 14 TESTED 119.9 & 120.95 & THEY BOTH WORKED GOOD 5X5.
- [SDR QXEA2018091700334](https://openairdocs.org/sdr/QXEA2018091700334.md): Transceiver · inoperative · Sep 15, 2018 · N441QX · Bombdr DHC8402
  > BOTH CAPTAIN AND FIRST OFFICER WERE UNABLE TO BE HEARD BY TOWER ON NR 1 RADIO. WE COULD BOTH HEAR TOWER ON RADIO NR 1. COMMUNICATION ON NR 2 WAS NORMAL. REMOVED FROM SERVICE. R&R NR 1 TRANSCEIVER IAW AM 23-11-01-00/400-801. OPS CHECK GOOD IAW AMM 23-11-00-710-
- [SDR QXEA2016052500346](https://openairdocs.org/sdr/QXEA2016052500346.md): Antenna · malfunctioned · May 25, 2016 · N430QX · Bombdr DHC8402
  > NR 1 COMM UNUSEABLE ON 126.6 MHZ. NR 2 OK ON 126.6. RETURNED TO FIELD, LANDING UNEVENTFUL. REPLACED NR 1 VHF COMM ANTENNA IAW AMM 23-11-26. CHECKS GOOD. RETURNED TO SERVICE.
- [SDR FDEA201507162269](https://openairdocs.org/sdr/FDEA201507162269.md): Circuit Breaker · tripped · Jul 16, 2015 · N978FD · Boeing 757236
  > CAPTAIN'S O2 MASK DOES NOT TRANSMIT. PDX R RESET COMM CB AT CAPTAIN`S O2 BOX IAW AMM 35-11-4. OPERATIONS CHECKED NORMAL.
- [SDR PNSA2015062605](https://openairdocs.org/sdr/PNSA2015062605.md): Electronic Unit · malfunctioned · Jun 26, 2015 · N677PA · Saab 340B
  > COMM NR 2 INTERMITTENTLY FAILS TO RECEIVE OR TRANSMIT AND MAKES TOGGLE CHANNEL CHANGE BEEP TONES DURING FAILURE. R & R REMOTE ELECTRONIC UNIT, VHF COMM TRANSCEIVER AND COMM CONTROL HEAD.
- [SDR UIEA2014071800338](https://openairdocs.org/sdr/UIEA2014071800338.md): Antenna · damaged · Jul 18, 2014 · N856GT · Boeing 74787UF
  > LIGHTNING STRIKE AT 12 O'CLOCK POSITION. PRELIMINARY INSPECTION IAW AMM 05-51-13 201 FOUND MULTIPLE BURN MARKS AROUND RIVETS, DAMAGED VHF, GPS, ELT, ADF & HF ANTENNAS. REPLACEMENT OF DAMAGED PARTS & REPAIRS ARE CURRENTLY IN PROGRESS & REMAINDER OF CONDITIONA
- [SDR UALA2012042502492](https://openairdocs.org/sdr/UALA2012042502492.md): Smoke Detector · faulted · Apr 25, 2012 · N181UA · Boeing 747422
  > FOUND FAULT IN CARGO AFT-3 LOOP-A. MESSAGE NR 26164. REPLACED SMOKE DETECTOR 3A I IN AFT PIT PER MM26-16-01 AND IPC 26-16-01-002. TEST PASS.
- [SDR I5PA030809](https://openairdocs.org/sdr/I5PA030809.md): Transceiver · malfunctioned · Mar 8, 2009 · N319NE · Boeing 727200
  > AIRCRAFT, AIR RETURNED DUE TO NR 1 AND NR 2 HF'S WOULD NOT TRANSMIT OR RECEIVE. CLEANED AND RESEATED BOTH TRANSCEIVERS, OPS CHECK WITH SFO NORMAL. OK FOR SERVICE NO FURTHER PROBLEMS
- [SDR CA080523005](https://openairdocs.org/sdr/CA080523005.md): Transceiver · inoperative · May 16, 2008 · Snias AS350BA
  > (CAN) RADIO WOULD NOT TRANSMIT, REMOVED AND INSTALLED SERVICABLE RADIO.
- [SDR HALA0800471](https://openairdocs.org/sdr/HALA0800471.md): Transceiver · malfunctioned · Mar 31, 2008 · N586HA · Boeing 7673G5
  > ETOPS SIGNIFICANT SYSTEM, L HF TRANSMITTER UNABLE TO TRANSMIT OR RECEIVE. REMOVED AND REPLACED LT HF TRANSCEIVER IAW AMM 23-11-00, OPS CHECK NORMAL.
- [SDR RAIA00701008](https://openairdocs.org/sdr/RAIA00701008.md): Control Module · unknown · Jan 5, 2007 · N823HK · Emb EMB145LR
  > FLT NR 7897-MDT-CAPTAIN AND FO'S RADIO LOCKED UP AND WERE UNABLE TO CHANGE FREQUENCIES. MAINTENANCE REMOVED AND REINSTALLED THE CMU. RADIOS OPERATED NORMALLY AFTERWARDS. NO OTHER DEFECTS NOTED.
- [SDR HALA0600478](https://openairdocs.org/sdr/HALA0600478.md): Antenna · cracked · Jun 26, 2006 · N476HA · Boeing 717200
  > VHF ANTENNA HAS A CRACK ON THE LEADING EDGE. REMOVED AND REPLACED ANTENNA PER AMM 23-12-02, OPERATIONAL CHECK PER AMM 23-12-00.

Next page: https://openairdocs.org/jasc/2311/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 = '2311'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/2311/reports

---
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