# JASC 3454: Visual Omnirange (VOR) System

- Type: JASC system/component code (FAA)
- ATA chapter: 34 Navigation
- Title in the code table: VOR SYSTEM
- Service difficulty reports: 317
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=40
- Page: https://openairdocs.org/jasc/3454

## What it covers

The radio navigation system in the very high frequency (VHF) band used for determining position relative to a ground transmitter and permits selection of an infinite number of magnetic courses for navigation to a transmitter (i.e., visual omnirange - VOR system). Typical parts are receiver, antenna, control panel, etc.

## Service difficulty reports (317, newest 50)

- [SDR FDEA202606130732](https://openairdocs.org/sdr/FDEA202606130732), Jun 13, 2026: Boeing 7673S2F. TRANSPONDER. FAILED. TRANSPONDER WAS SMOKING AND SHOWED FAILED. VERIFIED AND CONFIRMED THAT THE ATC PANEL FAILED AND THE SMOKING WAS CONFINED (N139FE)
- [SDR DALA2026060603410](https://openairdocs.org/sdr/DALA2026060603410), Jun 6, 2026: Boeing 757232. SWITCH. SHORTED. FO SIDE VOR/DME AUTO/MAN SWITCH SHORTED WHEN PRESSED. SMOKE CAME OUT MOMENTARILY DURING FLIGHT. REPLACED VOR/DME PANEL I (N693DL)
- [SDR FDEA202407301066](https://openairdocs.org/sdr/FDEA202407301066), Jul 30, 2024: Boeing 7673S2F. TRANSPONDER. FAULTED. ENROUTE GOT AN ATC FAULT EICAS MESSAGE. CREW REPORT SYSTEM RECOVERED DURING FLIGHT.TESTING IN PROGRESS. FIM: 34-53 FAULT (N102FE)
- [SDR CALA2024032100817](https://openairdocs.org/sdr/CALA2024032100817), Mar 17, 2024: Boeing 737924ER. ANTENNA. DAMAGED. TOP OF VERTICAL STAB DAMAGED. PERORMED STEPS 1 AND 2 OF AVO12217, REFERENCE AMM 55-33-21-000-801 FOR STEP 2. C/W HFEC RE (N68821)
- [SDR HNAA2023121800467](https://openairdocs.org/sdr/HNAA2023121800467), Dec 17, 2023: Emb EMB145LR. UNKNOWN. UNKNOWN. UPON APPROACH TO CLT LOC ERRATIC WITH TEMP LOSS OF LOC SIGNAL. R/R VOR/LOC DIPLEXER AND PHASE COUPLER IAW AMM 34-32-02-0 (N637AE)
- [SDR VNAA202108191111](https://openairdocs.org/sdr/VNAA202108191111), Aug 15, 2021: Cndair CL6002C10. RECEIVER. MALFUNCTIONED. VOR 1 AND 2 RED FLAG IN FLIGHT. DME AND IDENTIFIERS STILL DISPLAYED. NO DEFLECTION NEEDLES. / PERFORMED OPS CHECK OF THE (N716PS)
- [SDR RU3A202002107009](https://openairdocs.org/sdr/RU3A202002107009), Feb 7, 2020: Beech 300BEECH. RECEIVER. FAILED. ELECTRICAL SMELL NOTED DURING GROUND OPERATION FROM FLIGHT INSPECTION SYSTEM. #2 FLIGHT INSPECTION VOR/ILS RECEIVER FAIL (N66)
- [SDR UIEA2019042643954](https://openairdocs.org/sdr/UIEA2019042643954), Apr 24, 2019: Boeing 76731B. LINE. UNSECURE. ON P61 PANEL E/E COOLING MONITOR GETS NO TEST INDICATION FOR VOR-L. VERIFIED PRESSURE COMING OUT OF SENSE LINE ON L VOR  (N1361A)
- [SDR FDEA201811253379](https://openairdocs.org/sdr/FDEA201811253379), Nov 25, 2018: Doug MD11F. TRANSPONDER. FAILED. PDIS 594 34-54 1175 25NOV18 ATH FACT U LOGPAGES:3042743 AT 1 30 HRS INTO FLIGHT RECIEVER LEVEL 1 TRANSPORNDER 1 FAIL.SWI (N594FE)
- [SDR FDEA201803290805](https://openairdocs.org/sdr/FDEA201803290805), Mar 29, 2018: Boeing 7673S2F. TRANSPONDER. MALFUNCTIONED. AT FL320, ATC REPORTED TRANSPONDER INDICATED FL 310 . TRANSPONDER WAS SET TO LEFT AT THE REPORT. CHANGED TRANSPONDER TO  (N103FE)
- [SDR Z1RA761039112017](https://openairdocs.org/sdr/Z1RA761039112017), Nov 20, 2017: Skrsky S76D. VOR SYSTEM. FAILED. #2 NAV HAS FAILURE CODE WHEN ON FREQS ABOVE 109 (N761AF)
- [SDR FDEA201702240655](https://openairdocs.org/sdr/FDEA201702240655), Feb 24, 2017: Boeing 7673S2F. CONTROL PANEL. FAILED. ON TAXI OUT THE TRANSPONDER RESET ITSELF TO 0000. PUT ASSIGNED CODE BACK IN. DURING CLIMBOUT ATC REPORTED A 600' DISCREP (N113FE)
- [SDR AALA20170214022](https://openairdocs.org/sdr/AALA20170214022), Feb 14, 2017: Boeing 737823. RECEIVER. FAULTY. AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. DURING CLIMB THE LNAV/VNAV BECAME UNRESPONSIVE. AUTOPILOT DROPPED IN CWS MODE (N921AN)
- [SDR QXEA2017013000034](https://openairdocs.org/sdr/QXEA2017013000034), Jan 30, 2017: Bombdr DHC8402. ANTENNA. FAULTY. BOTH VHF NAV 1 & 2 WOULD NOT RECEIVE. NO IDENTS OR NEEDLES. DME DISPLAYED WITHOUT IDENT. ON RETURN TO PDX DURING DESCENT (N435QX)
- [SDR HALA2017012500015](https://openairdocs.org/sdr/HALA2017012500015), Jan 25, 2017: Boeing 767332. VOR SYSTEM. MALFUNCTIONED. UNABLE TO RECEIVE VOR AZMUTH ON EITHER MX VOR UNTIL WITH IN 60 NM OF STATION VOR RESET VOR 1 & 2 OPS CHECKED SYS GOOD ON (N590HA)
- [SDR DALA2016110208144](https://openairdocs.org/sdr/DALA2016110208144), Aug 4, 2016: Boeing 717200. ACCESS PANEL. CORRODED. CORROSION ON ACCESS PANEL 370JL VOR / LOCALIZER ANTENNA PANEL. UPPER LT VOR / LOCALIZER ANTENNA PANEL WAS REPLACED IAW A (N959AT)
- [SDR DALA2016110208143](https://openairdocs.org/sdr/DALA2016110208143), Aug 4, 2016: Boeing 717200. ACCESS PANEL. CORRODED. CORROSION ON ACCESS PANEL 370DL VOR/LOCALIZER ANTENNA PANEL. LOWER LT VOR/LOCALIZER ANTENNA PANEL WAS REPLACED IAW AMM 3 (N959AT)
- [SDR YENA20160118033](https://openairdocs.org/sdr/YENA20160118033), Jan 18, 2016: Airbus A320232. RECEIVER. FAILED. FLT 1488, NOTICIED NR 1 VOR RED ON MFD, STARTED SMELLING A FAINT BURNING ODOR, THE CIRCUIT BREAKER TRIPPED MESSAGE APPEA (N630JB)
- [SDR RAIA201409080001](https://openairdocs.org/sdr/RAIA201409080001), Sep 8, 2014: Emb EMB145LR. ANTENNA. FAILED. NR 1 AND 2 VOR LOCALIZERS VERY ERRATIC WITH FULL DEFLECTIONS L/R NEAR LANDING MINIMUMS. MAINTENANCE INSPECTED AND REPLAC (N832HK)
- [SDR HYIA20140523003](https://openairdocs.org/sdr/HYIA20140523003), May 21, 2014: Cessna 402C. INDICATOR. SEPARATED. ELEVATOR JAMMED ON TAKEOFF, COULD NOT PULL YOKE BACK TO ROTATE. VOR 2 INDICATOR CASE DROPPED ONTO THE CONTROL YOKE PREVE (N781EA)
- [SDR SIMA20140108005](https://openairdocs.org/sdr/SIMA20140108005), Jan 8, 2014: Emb EMB145LR. UNKNOWN. MALFUNCTIONED. ON FLIGHT 3266 DURING APPROACH CREW REPORTED LOST BOTH LOCALIZER SIGNALS & BOTH GPS SIGNALS FOR LATERAL GUIDANCE. THE AC (N644AE)
- [SDR CHQA20131229468](https://openairdocs.org/sdr/CHQA20131229468), Dec 29, 2013: Emb EMB145LR. UNKNOWN. MALFUNCTIONED. CREW REPORTED THE LOCALIZER LIST SIGNAL ON APPROACH TO KLGA. THE CREW DIVERTED TO KBDL & LANDED WITHOUT INCIDENT. THE CR (N567RP)
- [SDR CALA2013102192217](https://openairdocs.org/sdr/CALA2013102192217), Oct 19, 2013: Boeing 767322. TRANSCEIVER. FAULTY. CAPTAIN VOR INOPERATIVE. LT VOR TRANSCEIVER REPLACED IAW AMM. ALL CHECKED GOOD. (N651UA)
- [SDR SIMA20130503006](https://openairdocs.org/sdr/SIMA20130503006), May 3, 2013: Emb EMB145LR. ANTENNA. MALFUNCTIONED. ON FLIGHT 4239 THE CREW REPORTED THEY LOST LOCALIZER SIGNAL ON TWO ATTEMPTS OF ILS 10L IN ORD WHILE ESTABLISHED INBOUND. (N923AE)
- [SDR UALA2013041802660](https://openairdocs.org/sdr/UALA2013041802660), Apr 17, 2013: Boeing 767322. RECEIVER. FAULTED. CAPTAIN`S RIGHT NAV HAS OFF FLAG. FAULT TRACED TO RT VOR RECEIVER. RT VOR RECEIVER REPLACED IAW AMM. RT VOR RECEIVER BIT (N674UA)
- [SDR CHQA20130409108](https://openairdocs.org/sdr/CHQA20130409108), Apr 9, 2013: Emb EMB145LR. ANTENNA. FAILED. DURING APPROACH, CREW REPORTED ILS 1 AND 2 ERRATIC. DIVERTED AND LANDED WITHOUT INCIDENT. VOR/ILS STABILIZER ANTENNA 1 A (N282SK)
- [SDR JJBA20121103003](https://openairdocs.org/sdr/JJBA20121103003), Nov 3, 2012: Dhav DHC8202. BUTTON. STUCK. DURING CRUISE, CREW REPORTED THAT BOTH TRANSPONDERS WERE DISPLAYING A "DIAG" MESSAGE. NEITHER TRANSPONDER WAS TRANSMITTI (N366PH)
- [SDR DALA12007576818](https://openairdocs.org/sdr/DALA12007576818), Sep 18, 2012: Boeing 7572Q8. CONTROL PANEL. ODOR. AIR RETURN BACK TO DEPARTURE DUE TO BURNING ELECTRIC ODOR IN THE FLIGHT DECK AND CABIN. FOUND VOR/DME CONTROL PANEL WITH (N624AG)
- [SDR VNAA2012052100018](https://openairdocs.org/sdr/VNAA2012052100018), May 21, 2012: Cndair CL6002B19. RECEIVER. MALFUNCTIONED. CREW REPORTED VOR AND FD’S (FLIGHT DIRECTOR) BOTH FLASHING, TURNING RED AND DISAPPEARING FROM DISPLAYS. MULTIPLE VOR’S A (N216PS)
- [SDR SIMA201200304](https://openairdocs.org/sdr/SIMA201200304), Dec 31, 2011: Emb EMB135LR. VOR SYSTEM. MALFUNCTIONED. THE CREW REPORTED THAT ON THE CLIMBOUT NOTICED THE NUMBER 2 VOR WAS OFF BY 180 DEGREES AND COULD NOT VERIFY WHICH ONE WA (N713AE)
- [SDR RAIA201112050001](https://openairdocs.org/sdr/RAIA201112050001), Dec 5, 2011: Emb EMB145EP. ANTENNA. MALFUNCTIONED. DURING CRUISE BOTH VOR SYSTEMS BECAME ERRATIC. FLIGHT CREW DECLARED AN EMERGENCY AND PREFORMED AN EMERGENCY LANDING. MAI (N806HK)
- [SDR UALA2011101005480](https://openairdocs.org/sdr/UALA2011101005480), Oct 7, 2011: Boeing 767322. RMI. INOPERATIVE. AFTER JET BRIDGE PULLED, CREW REPORTS CAPTAIN'S RMI INOP. REPLACED RMI, OPS NORMAL. (N675UA)
- [SDR HALA2011091200402](https://openairdocs.org/sdr/HALA2011091200402), Sep 12, 2011: Boeing 76733A. VOR SYSTEM. MALFUNCTIONED. ETOPS SIGNIFICANT SYS -VOR LT DID NOT TEST NORMAL DURING E/E COOLING MONITOR TEST. OPS CHECKED IAW AMM21-58-34-702-025,  (N583HA)
- [SDR DALA1147970641](https://openairdocs.org/sdr/DALA1147970641), Aug 15, 2011: Boeing 757232. CONTROL PANEL. SHORTED. SMOKE-FUMES EMITTED FROM THE VOR/DME CONTROL PANEL. MAINTENANCE INSPECTED WIRING AND REPLACED THE CONTROL PANEL. OPERATI (N641DL)
- [SDR HALA2011081500366](https://openairdocs.org/sdr/HALA2011081500366), Aug 15, 2011: Boeing 7673CB. RECEIVER. INOPERATIVE. ETOPS SIGNIFICANT SYS - VOR 1 FLAG DISPLAYED ON BOTH RMI'S. FOUND NO POWER TO NR1 VOR RECEIVER. RERACKED NR1 VOR AND OPS (N590HA)
- [SDR COEA2011032462805](https://openairdocs.org/sdr/COEA2011032462805), Mar 24, 2011: Aerosp ATR72212. PLATE. CORRODED. HEAVY CK COE / LEVEL 2 CORROSION: RT VOR ANTENNA MOUNT PLATE HAS CORROSION ON BOTH SIDES (LENGTH 1.75", WIDTH .750", DEP (N805FX)
- [SDR C2XA11TY015](https://openairdocs.org/sdr/C2XA11TY015), Feb 11, 2011: Emb EMB145LR. COUPLER. BROKEN. EN ROUTE, WHEN CREW RECEIVED A MESSAGE FROM THE VOR/ILS. CDI NEEDLE SHOWING A FULL SCALE DEFLECTION TO LT AND RT, MISSIN (N15985)
- [SDR CHQA201000226](https://openairdocs.org/sdr/CHQA201000226), Dec 9, 2010: Emb EMB135KL. ANTENNA LEAD. CONTAMINATED. ON APPROACH TO RUNWAY 14L IN ORD, THE CREW WAS UNABLE TO RECEIVE LOCALIZER SIGNALS WITH BOTH RADIOS FROM 20 NAUTICAL MIL (N373SK)
- [SDR HALA2010111500537](https://openairdocs.org/sdr/HALA2010111500537), Nov 15, 2010: Boeing 76733A. CONTROL PANEL. MALFUNCTIONED. ETOPS SIGNIFICANT SYS - LT VOR DME INOP. REPLACED LT VOR/DME CONTROL PANEL IAW AMM 34-51-02, GND CHECK OK. (N581HA)
- [SDR HALA2010100300449](https://openairdocs.org/sdr/HALA2010100300449), Oct 3, 2010: Boeing 7673CB. VOR SYSTEM. INOPERATIVE. ETOPS SIGNIFICANT SYS - F/O RMI NR 2 VOR FLAG IN VIEW. DME OK. UNABLE TO DUPLICATE. NO FLAG NOT IN VIEW AT THIS TIME. (N590HA)
- [SDR FDEA201008203055](https://openairdocs.org/sdr/FDEA201008203055), Aug 20, 2010: Boeing 727277. RECEIVER. FAILED. VOR'S CHECKED GOOD ON PREFLIGHT. DURING CLIMBOUT BOTH VOR'S SHOWED A 30 DEGREE SPLIT ON VOR STA COULD NOT CTR EITHER CDI (N244FE)
- [SDR C2XA09IA309](https://openairdocs.org/sdr/C2XA09IA309), Dec 8, 2009: Emb EMB145XR. RMU. MALFUNCTIONED. DLH - FLIGHT 2593 FROM IAH TO OMA DIVERTED TO DLH AFTER RMU 1 & AT NAV'S DASHED OUT IN FLIGHT. THE AIRCRAFT LANDED AT DL (N14203)
- [SDR UALA2009101203201](https://openairdocs.org/sdr/UALA2009101203201), Oct 11, 2009: Boeing 757222. CONTROL PANEL. MALFUNCTIONED. ELECTRICAL ODOR IN COCKPIT, FLIGHT DIVERTED. CREW REPORTED ELEC ODOR ON CAPT SIDE AROUND THE AREA OF GLARE SHIELD. INSPE (N552UA)
- [SDR GLBA20090408B](https://openairdocs.org/sdr/GLBA20090408B), Apr 8, 2009: Beech 1900D. VOR SYSTEM. INOPERATIVE. PILOTS REPORTED THAT THE NR 2 NAV RADIO WAS INOPERATIVE AND RETURNED TO DEN. MAINTENANCE REMOVED AND REPLACED THE VOR-IL (N218YV)
- [SDR SWIA200819772](https://openairdocs.org/sdr/SWIA200819772), Jun 9, 2008: Emb EMB120ER. RADIO. MALFUNCTIONED. BOTH NAV RADIOS WENT INOP. REPLACED FIRST OFFICERS VIR32 AND VOR ANTENNA COUPLER. OPERATIONAL CHECKS ARE GOOD. (N296SW)
- [SDR HNAA0800142](https://openairdocs.org/sdr/HNAA0800142), Apr 22, 2008: Dhav DHC8102. RECEIVER. FAILED. ON APPROACH INTO CLT NR 1 NAVIGATION RECEIVER FAILED FOLLOWED BY A STRONG ODOR. REMOVED AND REPLACED NR 1 NAV RECEIVER I (N935HA)
- [SDR AMWA89978](https://openairdocs.org/sdr/AMWA89978), Feb 6, 2008: Beech 1900D. CONTROL HEAD. SMOKE. DURING SHORT FINAL APPROACH, SMOKE WAS DETECTED COMING OUT OF THE NR1 NAV CONTROL HEAD. THE NR1 NAV CB'S WERE PULLED, TH (N167YV)
- [SDR UPS08651393](https://openairdocs.org/sdr/UPS08651393), Jan 11, 2008: Boeing 76734AF. SWITCH. MALFUNCTIONED. INSPECTION TYPE:ETOP VOR/DME AUTO MAN SELECTOR SWITCH DIDN'T ILLUM ON F/O SIDE WHEN PUSHED SMOKE CAME OUT FROM UNDER GLA (N311UP)
- [SDR DL757071575](https://openairdocs.org/sdr/DL757071575), Nov 30, 2007: Boeing 757232. RECEIVER. FAILED. CREW REPORTED ELECTRICAL FUMES IN FLIGHT. RIGHT VOR C/B WAS FOUND POPPED AND WOULD NOT RESET. RT VOR RECEIVER WAS FOUND  (N633DL)
- [SDR BB07089](https://openairdocs.org/sdr/BB07089), Nov 9, 2007: Boeing 7672B7. CONTROL PANEL. FAILED. FLIGHT 811, PHL-CUN: AFTER TAKEOFF, CREW REPORTED LOSS OF L-NAV. RETURNED TO FIELD. MAINTENANCE REPLACED THE VOR/DME CON (N251AY)

All 317: https://openairdocs.org/jasc/3454/reports.md

## Other codes in chapter 34

- [JASC 3400](https://openairdocs.org/jasc/3400): Navigation System (692 reports)
- [JASC 3410](https://openairdocs.org/jasc/3410): Flight Environment Data (218 reports)
- [JASC 3411](https://openairdocs.org/jasc/3411): Pitot/Static System (1,586 reports)
- [JASC 3412](https://openairdocs.org/jasc/3412): Outside Air Temperature Indicator/Sensor (254 reports)
- [JASC 3413](https://openairdocs.org/jasc/3413): Rate of Climb Indicator (157 reports)
- [JASC 3414](https://openairdocs.org/jasc/3414): Airspeed/Mach Indicator (860 reports)
- [JASC 3415](https://openairdocs.org/jasc/3415): High Speed Warning (39 reports)
- [JASC 3416](https://openairdocs.org/jasc/3416): Altimeter, Barometric/Encoder (1,256 reports)
- [JASC 3417](https://openairdocs.org/jasc/3417): Air Data Computer (1,210 reports)
- [JASC 3418](https://openairdocs.org/jasc/3418): Stall Warning System (1,641 reports)
- [JASC 3420](https://openairdocs.org/jasc/3420): Attitude and Direction Data System (772 reports)
- [JASC 3421](https://openairdocs.org/jasc/3421): Attitude Gyro and Indicating System (1,142 reports)
- [JASC 3422](https://openairdocs.org/jasc/3422): Directional Gyro and Indicating System (649 reports)
- [JASC 3423](https://openairdocs.org/jasc/3423): Magnetic Compass (101 reports)
- [JASC 3424](https://openairdocs.org/jasc/3424): Turn and Bank/Rate of Turn Indicator (153 reports)
- [JASC 3425](https://openairdocs.org/jasc/3425): Integrated Flight System (1,150 reports)
- [JASC 3430](https://openairdocs.org/jasc/3430): Landing and Taxi Aids (56 reports)
- [JASC 3431](https://openairdocs.org/jasc/3431): Localizer/VOR System (129 reports)
- [JASC 3432](https://openairdocs.org/jasc/3432): Glide Slope System (66 reports)
- [JASC 3433](https://openairdocs.org/jasc/3433): Microwave Landing System (26 reports)
- [JASC 3434](https://openairdocs.org/jasc/3434): Marker Beacon System (27 reports)
- [JASC 3435](https://openairdocs.org/jasc/3435): Heads Up Display System (10 reports)
- [JASC 3436](https://openairdocs.org/jasc/3436): Wind Shear Detection System (70 reports)
- [JASC 3440](https://openairdocs.org/jasc/3440): Independent Position Determining System (261 reports)
- [JASC 3441](https://openairdocs.org/jasc/3441): Inertial Guidance System (289 reports)
- [JASC 3442](https://openairdocs.org/jasc/3442): Weather Radar System (3,442 reports)
- [JASC 3443](https://openairdocs.org/jasc/3443): Doppler System (110 reports)
- [JASC 3444](https://openairdocs.org/jasc/3444): Ground Proximity System (552 reports)
- [JASC 3445](https://openairdocs.org/jasc/3445): Air Collision Avoidance System (214 reports)
- [JASC 3446](https://openairdocs.org/jasc/3446): Non Radar Weather System (23 reports)
- [JASC 3450](https://openairdocs.org/jasc/3450): Dependent Position Determining System (106 reports)
- [JASC 3451](https://openairdocs.org/jasc/3451): DME/TACAN System (197 reports)
- [JASC 3452](https://openairdocs.org/jasc/3452): ATC Transponder System (624 reports)
- [JASC 3453](https://openairdocs.org/jasc/3453): Long-Range Navigation (LORAN) System (175 reports)
- [JASC 3455](https://openairdocs.org/jasc/3455): Automatic Direction Finder (ADF) System (164 reports)
- [JASC 3456](https://openairdocs.org/jasc/3456): Omega Navigation System (9 reports)
- [JASC 3457](https://openairdocs.org/jasc/3457): Global Positioning System (635 reports)
- [JASC 3460](https://openairdocs.org/jasc/3460): Flight Management Computing Hardware System (4,690 reports)
- [JASC 3461](https://openairdocs.org/jasc/3461): Flight Management Computing Software System (68 reports)
- [JASC 3497](https://openairdocs.org/jasc/3497): Navigation System Wiring (269 reports)

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