# JASC 3432: Glide Slope System

- Type: JASC system/component code (FAA)
- ATA chapter: 34 Navigation
- Title in the code table: GLIDE SLOPE SYSTEM
- Service difficulty reports: 66
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=38
- Page: https://openairdocs.org/jasc/3432

## What it covers

The system which provides an instrument needle reference from an electronic signal radiated from a ground transmitter to enable the pilot to fly the proper glide path for landing under instrument meteorological conditions. Typical parts are circuit breaker, switch, receiver, antenna, indicator, etc.

## Service difficulty reports (66, newest 50)

- [SDR FDEA202607100898](https://openairdocs.org/sdr/FDEA202607100898), Jul 10, 2026: Airbus A300F4605R. GLIDE SLOPE. MALFUNCTIONED. ON RNAV APPROACH RW 21, ON GLIDEPATH AND CONFIGURED FOR LANDING GOT GLIDESLOPE GLIDESLOPE REPEATEDLY STARTING AT 100 FEE (N654FE)
- [SDR DALA2026052603148](https://openairdocs.org/sdr/DALA2026052603148), May 24, 2026: Airbus A319114. GLIDE SLOPE. FAULTED. DIV - TO SAV DUE TO GLIDE SLOPE NOT CAPTURING DURING THE APPROACH TO ATL IN IFR CONDITIONS. COULD NOT DUPLICATE. SWAPPED (N319NB)
- [SDR DALA2026030301468](https://openairdocs.org/sdr/DALA2026030301468), Feb 28, 2026: Airbus A321213. GLIDE SLOPE. FAILED. SHIP 3044 - DIV - TO BHM DUE TO CAPTAINS GLIDE SLOPE FAILURE DURING THE APPROACH TO ATL. CORRECTIVE ACTION: REPLACED MMR (N344DN)
- [SDR HNAA2025103100730](https://openairdocs.org/sdr/HNAA2025103100730), Oct 29, 2025: Emb EMB145LR. GLIDE SLOPE. UNKNOWN. RECIEVED FULL DEFLECTION OF 1.5 ON BOTH SIDE OF GLIDESLOPE IN EWN, DIVERTED TO ILM DEFLECTION HAPPENED 700 FT, AND RA WA (N652RS)
- [SDR YENA2024101801379](https://openairdocs.org/sdr/YENA2024101801379), Oct 16, 2024: Airbus A321271N. GLIDE SLOPE. FAULTED. FLT#287, BOS-LAX. 'GS FAILED TO CAPTURE ON ILS APPROACH; PERFORMED BITE TEST OF MMR 1 AND 2 PER AMM 34-36-00-740-007-A.  (N2142J)
- [SDR HNAA2020122100376](https://openairdocs.org/sdr/HNAA2020122100376), Dec 20, 2020: Emb EMB145LR. CONTROL UNIT. MALFUNCTIONED. GLIDESLOPE LEFT AND RIGHT SIDE DID NOT MATCH ON ILS APPROACH. FOR THE ENTIRE APPROACH. R & R RT NAV UNIT, IAW EMB AMM 34 (N658AE)
- [SDR YBBA20181203001](https://openairdocs.org/sdr/YBBA20181203001), Nov 30, 2018: Amd FALCON10. GLIDE SLOPE. FALSE INDICATION. PIC REPORTED #1 GLIDE SCOPE INTERMITTENT DURING DESCENT TO KAPA, DOM NOTIFIED. MX CALLED OUT TO LOCATION. UNIT MEL CAT " (N111WH)
- [SDR CA191205007](https://openairdocs.org/sdr/CA191205007), Jan 26, 2017: Boeing 73736Q. ADAPTER. FAILED. (CAN) LPV APPROACH ANOMALY: GLIDE SLOPE DEVIATION POINTER MOMENTARILY SCALLOPED UP FOR A SPLIT SECOND AT FINAL APPROACH 
- [SDR DALA2016110108052](https://openairdocs.org/sdr/DALA2016110108052), Aug 4, 2016: Boeing 717200. ACCESS PANEL. CORRODED. CORROSION ON ACCESS PANEL 370GR VOR/LOCALIZER ANTENNA PANEL. LOWER RT VOR/LOCALIZER ANTENNA PANEL WAS REPLACED IAW AMM 3 (N959AT)
- [SDR CA1912050006](https://openairdocs.org/sdr/CA1912050006), Jan 24, 2016: Boeing 73736N. ADAPTER. FAILED. (CAN) FINAL APPROACH CONDUCTING LPV APPROACH AIRCRAFT WAS FULLY CONFIGURED AND STABLE ON APPROACH WITH LOCALIZER AND GLI
- [SDR CALA2014021790401](https://openairdocs.org/sdr/CALA2014021790401), Feb 14, 2014: Boeing 767322. INDICATOR. MALFUNCTIONED. LOST BOTH FLIGHT DIRECTOR GLIDE SLOPE INDICATORS ON FINAL. (N659UA)
- [SDR CA130809006](https://openairdocs.org/sdr/CA130809006), Aug 4, 2013: Beech B200. AMPLIFIER. MISINSTALLED. (CAN) THE AIRCRAFT EXPERIENCED AUDIO CONTROL ISSUES ON A ROUTINE FLIGHT FROM YEG TO YMM, MAINTENANCE WAS CALLED OUT AND 
- [SDR UALA2011120506672](https://openairdocs.org/sdr/UALA2011120506672), Dec 5, 2011: Boeing 777222. CIRCUIT CARD. MALFUNCTIONED. APU BATTERY OVERHEAT STATUS MESSAGE DISPLAYED ON EICAS. REPLACED APU BATTERY, NO HELP. SIGNAL CONDITIONING CARD REPLACED (N783UA)
- [SDR ASAA1159413](https://openairdocs.org/sdr/ASAA1159413), Apr 10, 2011: Boeing 737890. BATTERY. DEFECTIVE. AUX BATTERY READING 2 AMPS DRAW. PERFORMED AUX BATTERY CHARGER OPERATIONAL TEST PER M/M 24 31 31 710 801 TESTS WITHIN LI (N566AS)
- [SDR HNAA2010082600195](https://openairdocs.org/sdr/HNAA2010082600195), Jul 29, 2010: Dhav DHC8102. GLIDE SLOPE. MALFUNCTIONED. CREW REPORTED BOTH GLIDE SLOPES OPERATED NORMALLY AND LOCALIZERS SHOW ACFT LT OF RUNWAY. HAD TO USE WET COMPASS FOR HEAD (N808EX)
- [SDR UALA2010071302516](https://openairdocs.org/sdr/UALA2010071302516), Jul 13, 2010: Boeing 777222. BATTERY. FAILED. APU FAULT - STATUS MSGS NEEDS BATTERY. REPLACED APU BATTERY PER MM. APU BATTERY CHARGE AND VOLTS GOOD. (N794UA)
- [SDR 2010FA0000624](https://openairdocs.org/sdr/2010FA0000624), May 4, 2010: Cndair CL6002B16. ANTENNA. UNKNOWN. CREW REPORTED THAT ON APPROACH, GLIDE SLOPE DEVIATED UP AND DOWN TO RUNWAY 18L. AUTOPILOT WAS ENGAGED AND COUPLED TO BOT (N779AZ)
- [SDR 2010FA0000267](https://openairdocs.org/sdr/2010FA0000267), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000266](https://openairdocs.org/sdr/2010FA0000266), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000265](https://openairdocs.org/sdr/2010FA0000265), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000264](https://openairdocs.org/sdr/2010FA0000264), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000263](https://openairdocs.org/sdr/2010FA0000263), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000262](https://openairdocs.org/sdr/2010FA0000262), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000261](https://openairdocs.org/sdr/2010FA0000261), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000260](https://openairdocs.org/sdr/2010FA0000260), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000259](https://openairdocs.org/sdr/2010FA0000259), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010FA0000258](https://openairdocs.org/sdr/2010FA0000258), Mar 16, 2010: TRANSCEIVER. MALFUNCTIONED. ON 01/30/2010 POST INSTALLATION, EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUC
- [SDR 2010F00070](https://openairdocs.org/sdr/2010F00070), Jan 30, 2010: TRANSCEIVER. INTERFERENCE. ON 01/30/2010 POST INSTALLATION EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUCT
- [SDR 2010F00069](https://openairdocs.org/sdr/2010F00069), Jan 30, 2010: TRANSCEIVER. INTERFERENCE. ON 01/30/2010 POST INSTALLATION EMI TESTING WAS CONDUCTED IN ACCORDANCE WITH APPENDIX B OF TDFM-136 INSTALLATION AND OPE
- [SDR 2010F00068](https://openairdocs.org/sdr/2010F00068), Jan 30, 2010: TRANSCEIVER. INTERFERENCE. ON 01/30/2010 POST INSTALLATION EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136 INSTALLATION AND OPERATING INSTRUCT
- [SDR 2010FA0000234](https://openairdocs.org/sdr/2010FA0000234), Jan 30, 2010: TRANSCEIVER. INTERFERENCE. ON 01/30/2010 POST INSTALLATION EMI TESTING WAS CONDUCTED IAW APPENDIX B OF TDFM-136. INSTALLATION AND OPERATING INSTRUC
- [SDR A6WA200940141](https://openairdocs.org/sdr/A6WA200940141), Mar 20, 2009: Cndair CL6002B19. ANTENNA. ERRATIC. NAV 1 AND NAV 2 INDICATED ERRATIC GLIDE SLOPE INDICATIONS FOLLOWED BY ERRONEOUS INDICATION AND GLIDE SLOPE FLAG WHILE OT (N404AW)
- [SDR COMA2009012650070](https://openairdocs.org/sdr/COMA2009012650070), Jan 25, 2009: Cndair CL6002B19. ANTENNA. FAILED. ON APPROACH INTO CVG, GLIDE SLOPE INDICATIONS ERRATIC FOLLOWED BY TOTAL LOSS OF GLIDE SLOPE INDICATOR. A/C LANDED SAFELY (N810CA)
- [SDR MALA070204](https://openairdocs.org/sdr/MALA070204), Dec 28, 2007: Saab 340B. ANTENNA. MALFUNCTIONED. ON ILS APPROACH TO DTW, APPROACH MODE ARMED AT 4000 FT, SHOWING HIGH ON SLOPE. AUTO PILOT ON. UNCOMMANDED DESCENT TO 400 (N415XJ)
- [SDR FDKA200709441](https://openairdocs.org/sdr/FDKA200709441), Sep 3, 2007: Emb EMB145LR. DETECTOR. MALFUNCTIONED. ABORTED T/O DUE TO F/O'S HEADING OFF 30 PERCENT. REMOVED AND REPLACED FLUX DETECTOR. (N832MJ)
- [SDR CA040908003](https://openairdocs.org/sdr/CA040908003), Sep 7, 2004: Beech B200. GLIDE SLOPE. ERRATIC. (CAN) RT GLIDESLOPE INDICATION VERY ERRATIC AND NO WARNING FLAP IN VIEW TELLING PILOT SIGNAL INVALID. MEL'ED SYSTEM AND 
- [SDR 04FDEA01764](https://openairdocs.org/sdr/04FDEA01764), Jun 16, 2004: Doug MD11. HOUSING. CRACKED. GLIDE SLOPE HOUSING MOUNTING BRACKET FOUND CRACKED. GLIDESLOPE HOUSING MOUNTING BRACKET REMOVED AND REPLACED AS PER AMM  (N610FE)
- [SDR ASMF200406004](https://openairdocs.org/sdr/ASMF200406004), Jun 4, 2004: Doug DC987. RELAY. FAILED. AIRCRAFT RETURNED TO PLATFORM DURING ENGINE START, VHF NAV NR 1 FAILED. VHF NR 1 CONTROL PANEL, DFGC AND VOR RECEPTOR WE (N754RA)
- [SDR ASMF200404010](https://openairdocs.org/sdr/ASMF200404010), Apr 13, 2004: Doug DC983. CONNECTOR. DAMAGED. DURING TRANSIT CHECK, CAPTAIN REPORTED THAT THE LEFT VHF SYSTEM WAS OUT OF SERVICE. TECHNICAL PERSONNEL REPLACED RX VOR  (N838AM)
- [SDR C1HA200476002](https://openairdocs.org/sdr/C1HA200476002), Apr 13, 2004: Boeing 727225. GLIDE SLOPE. ERRATIC. BOTH GLIDE SLOPES ERRATIC CAUSING GO-AROUND. SUSPECT GROUND PROBLEM. PERFORMED TEST ON BOTH ILS SYSTEMS. NO DEFECT NOTED (N817EA)
- [SDR COMA0460242](https://openairdocs.org/sdr/COMA0460242), Apr 1, 2004: Cndair CL6002B19. RECEIVER. MALFUNCTIONED. FLIGHT 5837 COPILOTS GLIDESLOPE FLAG ON APPROACH. REPLACED THE NR 2 NAV RECEIVER. (N710CA)
- [SDR MEX2003468](https://openairdocs.org/sdr/MEX2003468), Oct 6, 2003: Doug DC987. RECEIVER. FAILED. AIRCRAFT RETURNED TO PLATFORM, DURING TAXING. VOR FLAGS ON RDMI INSIGHT IN BOTH INSTRUMENTS. TX RX VOR/ILS WAS REPLACED  (N751RA)
- [SDR 2003FA0000237](https://openairdocs.org/sdr/2003FA0000237), Feb 28, 2003: Cessna 206H. INDICATOR. INOPERATIVE. NEW AIRCRAFT, NEW HSI 345 HRS TTAF. GLIDESLOPE INOPERATIVE, FOUND GLIDESLOPE NEEDLE RESTRAINT (FROM TRANSPORT) STILL IN  (N3535T)
- [SDR BAQA084698](https://openairdocs.org/sdr/BAQA084698), Feb 24, 2003: Aerosp AS355F2. CONTROLLER. BROKEN. BACK OF CONNECTOR ON HSI IS BROKEN. BROKEN AT TIME OF RECEIVING. (N941MS)
- [SDR AUS20020197](https://openairdocs.org/sdr/AUS20020197), Feb 23, 2002: Cessna TR182. CONNECTOR. FAULTY. (AUS) GLIDESLOPE RECEIVER CONNECTOR INPUT VOLTAGE PIN BENT.
- [SDR ABXA010524](https://openairdocs.org/sdr/ABXA010524), Sep 26, 2001: Boeing 767281. INDICATOR. MALFUNCTIONED. BOTH LEFT AND RIGHT GLIDE SLOPES WERE FLAGGED. MAINTENANCE PERFORMED B767 FIM 22-00-02, FIG 113. A CAT III EVALUATION AP (N787AX)
- [SDR HEEA072647](https://openairdocs.org/sdr/HEEA072647), Apr 17, 2001: Bell 412. RECEIVER. FAILED. WILL NOT RECEIVE. PERFORMED PRELIMINARY INSPECTION. REPLACED OPEN FUSE F501. REPAIRED PROBLEM. ADJUSTED LOCALIZER DEVIAT (N3911L)
- [SDR 2001UALA00046](https://openairdocs.org/sdr/2001UALA00046), Jan 22, 2001: Boeing 737322. RECEIVER. INOPERATIVE. NR 1 NAVIGATION RECEIVER IS INOPERATIVE. *S/D* REPLACED NR 1 NAVIGATION RECEIVER. OPS CHECKED OK. (N334UA)
- [SDR MALA000653](https://openairdocs.org/sdr/MALA000653), Oct 31, 2000: Saab SF340A. COMPUTER. MALFUNCTIONED. AIR RETURN FOR STANDBY PITCH TRIM INOP (AIR ONLY). FROM DMR AFCS COMMANDED 7 PITCH UP JUST PRIOR TO GS CAPTURE. GS INDIC (N109XJ)
- [SDR SWIA971996](https://openairdocs.org/sdr/SWIA971996), Sep 23, 2000: Emb EMB120ER. INDICATOR. FAILED. NUMBER TWO NAV SYSTEM FAILED INFLIGHT. ''''NAV'''' FLAG WITHOUT IDENT FEATURE ON ALL VOR AND ILS FREQUENCIES. RETURNED T (N212SW)

All 66: https://openairdocs.org/jasc/3432/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 (1,148 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 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 3454](https://openairdocs.org/jasc/3454): Visual Omnirange (VOR) System (317 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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