# JASC 3446: Non Radar Weather System

- Type: JASC system/component code (FAA)
- ATA chapter: 34 Navigation
- Title in the code table: NON RADAR WEATHER SYSTEM
- Service difficulty reports: 23
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=40
- Page: https://openairdocs.org/jasc/3446

## What it covers

The non radar weather system and components which sense the electrostatic charges accumulated around a storm cell in order to "map out" that cell on an indicator.

## Service difficulty reports (23)

- [SDR AALA202601129996](https://openairdocs.org/sdr/AALA202601129996), Jan 11, 2026: Boeing 737823. COMPUTER. FAILED. AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: TERRAIN FAILED. AIRCRAFT AIR INTERRUPTED BACK TO AND LA (N882NN)
- [SDR CALA2024111301128](https://openairdocs.org/sdr/CALA2024111301128), Nov 10, 2024: Boeing 737924ER. INDICATOR. MALFUNCTIONED. DURING ARRIVAL TO IAH FO SIDE LOC FLAG.FOLLOWD BY ILS AND GLS ON IRS PANEL.GPWS INOP ILLUM PERFORMED OPS CHECK 34-46-00  (N66841)
- [SDR CALA2024071802060](https://openairdocs.org/sdr/CALA2024071802060), Jul 7, 2024: Boeing 737824. COMPUTER. INOPERATIVE. GPWS INOP AND TERRAIN FAIL IN FLIGHT UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING  (N35271)
- [SDR CALA2022020400319](https://openairdocs.org/sdr/CALA2022020400319), Feb 3, 2022: Boeing 777224. WARNING SYSTEM. FALSE INDICATION. CREW REPORTS LOW SPEED ABORT AT 80 KNOTS DUE TO AURAL WARNING THAT AIRCRAFT WAS ON A TAXIWAY. AC WAS ACTUALLY ON RUNWAY  (N74007)
- [SDR UIEA2019031103512](https://openairdocs.org/sdr/UIEA2019031103512), Mar 6, 2019: Boeing 76736N. COMPUTER. MALFUNCTIONED. WINDSHEAR SYS EICAS MSG @FL 400(<DIV>RERACKED EGPWS COMPUTER ALL AURAL WARNINGS AND LIGHTS TEST NML IAW FIM 34-46 FAULT  (N1093A)
- [SDR IPXA2016092108519](https://openairdocs.org/sdr/IPXA2016092108519), Sep 19, 2016: Doug MD11F. COAX. FAILED. SHORTLY AFTER TAKEOFF, TCAS FAILED. RETURNED TO DEPARTURE. REPLACED BOTH J2 AND J4 COAX CABLES. TCAS OPS CHECK GOOD. (N270UP)
- [SDR UIEA2013071600370](https://openairdocs.org/sdr/UIEA2013071600370), Jul 14, 2013: Boeing 767277. WARNING MESSAGE. ILLUMINATED. GROUND PROX STATUS MESSAGE. PERFORMED WIRING CHANGE IAW EO 6734A032 EGPWS SYST BITE AND GROUND CHECK GOOD, DMI 41175 CLE (N767MW)
- [SDR UALA2013041502572](https://openairdocs.org/sdr/UALA2013041502572), Apr 14, 2013: Boeing 777222. TRANSCEIVER. FAILED. WINDSHEAR PREDICTIVE WINDSHEAR FUNCTION OF THE WEATHER RADAR UNIT IS FAILED. REPLACED RT UNIT, OPS OKAY PER AMM. (N779UA)
- [SDR SWAA2012042603445](https://openairdocs.org/sdr/SWAA2012042603445), Apr 25, 2012: Boeing 7373A4. PANEL. FAULTY. DECLARED EMERGENCY -- TERRAIN DISPLAY POPPED AND STARTED TO SMOKE. REMOVED AND REPLACED TERRAIN DISPLAY PANEL PER MM. (N669SW)
- [SDR IPXA10562473](https://openairdocs.org/sdr/IPXA10562473), Sep 9, 2010: Boeing 75724APF. VSI. INOPERATIVE. DIVERSION - TCAS FAIL ENROUTE. TCAS WAS ALSO REPORTING REVERSE SENSING OF TRAFFIC. BEFORE COMPLETE FAILURE TCAS FLAGS IN (N468UP)
- [SDR KNNA20090006](https://openairdocs.org/sdr/KNNA20090006), Jun 5, 2009: Boeing 737291. RADAR. ODOR. DURING DESCENT & APPROACHING 15DME ARC ON NANKU 2 ARRIVAL. SHORTLY AFTER RADAR SCREEN TURNED RED, NOTICED AN ELECTRICAL  (N977UA)
- [SDR YENA20090515049](https://openairdocs.org/sdr/YENA20090515049), May 14, 2009: Emb ERJ190100IGW. ALTIMETER. FAILED. FLT NR721, AFTER TAKEOFF HAD DUAL RA FAILURE WITH TAIL STRIKE PROT FAIL MESSAGE ON EICAS. ADDITIONALLY RA FLAGS WERE DIS (N203JB)
- [SDR HSY2005F00000](https://openairdocs.org/sdr/HSY2005F00000), Mar 15, 2005: Cessna 208B. INDICATOR. UNSERVICEABLE. AIR RETURNED, DUE TO PILOT EXPERIENCING SMOKE IN THE COCKPIT. PILOT NOTICED THE RADAR INDICATOR BLINKING OFF AND ON. MAI (N766FE)
- [SDR DL76L050040](https://openairdocs.org/sdr/DL76L050040), Jan 17, 2005: Boeing 767332. SWITCH. OVERHEATED. ON APPROACH LATCHED THE EGPWS INHIBIT SWITCH, HAD ELECTRICAL ODOR IN COCKPIT. SVO FOUND INHIBIT SWITCH WARM WHEN LATCHED (N197DN)
- [SDR UPS03641380](https://openairdocs.org/sdr/UPS03641380), Oct 8, 2003: Boeing 767300. INDICATOR. INOPERATIVE. INSPECTION TYPE: ETOP DIVERSION, CAPTIANS VERTICAL SPEED FLAG IN VIEW ALT AIR DATA DOESN'T CORRECT. (TCAS FLAG IN VSI AL (N331UP)
- [SDR HEEA082444](https://openairdocs.org/sdr/HEEA082444), Dec 12, 2002: Skrsky S76A. INDICATOR. MALFUNCTIONED. RADAR ALTIMETER INDICATOR HAS AN UNRELIABLE OFF FLAG AND NEEDLE PARKS DURING FLIGHT. (N1545X)
- [SDR 99ZZZX2487](https://openairdocs.org/sdr/99ZZZX2487), May 30, 1999: Piper PA30. STORMSCOPE. RAILED. ON FIRST START-UP, DISPLAY WAS NOT CLEAR. WOULD NOT CHANGE FROM STRIKE MODE TO CELL MODE. COMPLETE FAILURE IN LESS THAN  (N8041Y)
- [SDR 99ZZZX2859](https://openairdocs.org/sdr/99ZZZX2859), Mar 8, 1999: Bolkms BO105S. COMPUTER. MALFUNCTION. COMPUTER READS ERROR 001 WHEN TURNED ON, THEN READS, OPERATION NO LONGER POSSIBLE. REMOVED AND REPLACED. (N105NG)
- [SDR 99ZZZX2858](https://openairdocs.org/sdr/99ZZZX2858), Feb 11, 1999: Bolkms BO105S. DISPLAY. FAILED. AFTER STORMSCOPE UNIT USED FOR ONE FLIGHT AND WARMED UP, NEXT FLIGHT, UNIT WILL NOT DISPLAY. REMOVED AND REPLACED. (N911LF)
- [SDR 98ZZZX939](https://openairdocs.org/sdr/98ZZZX939), Jan 15, 1998: Bolkms BK117A4. DISPLAY. FAILED. STORMSCOPE DISPLAY INOPERATIVE. FAILED APPROXIMATELY 1 MONTH AFTER INSTALLATION. REMOVED AND REPLACED. (N117NG)
- [SDR 98ZZZX946](https://openairdocs.org/sdr/98ZZZX946), Jan 14, 1998: Bolkms BK117A3. STORMSCOPE. FAILED. STORMSCOPE UNIT NOT RECEIVING INPUT. REMOVED AND REPLACED. (N4493X)
- [SDR ARWA9603008](https://openairdocs.org/sdr/ARWA9603008), Mar 20, 1996: Doug DC863F. RT UNIT. INOPERATIVE. ON CLIMB-OUT OF MIAMI, RADAR WENT BLANK. RETURNED TO MIAMI. REMOVED AND REPLACED RADAR RECEIVING TRANSMITTING UNIT. OPS  (N661AV)
- [SDR 95ZZZX3105](https://openairdocs.org/sdr/95ZZZX3105), Apr 24, 1995: Bolkms BK117C1. STORMSCOPE. FAILED. STORMSCOPE, NO INDICATION IT IS PROCESSING. (N317MC)

## 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 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 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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