# JASC 3300: Lighting System

- Type: JASC system/component code (FAA)
- ATA chapter: 33 Lights
- Title in the code table: LIGHTING SYSTEM
- Service difficulty reports: 908
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=35
- Page: https://openairdocs.org/jasc/3300

## What it covers

The units and components which provide for external and internal illumination. Includes light fixtures, switches and wiring. Does not include warning lights for individual systems. Use this code for reports of a general nature or for miscellaneous external and internal lamps, circuitry, switches, etc., with insufficient information to file in a specific JASC 3300 series code. Warning lights are filed in the individual JASC Chapter 33 code.

## Service difficulty reports (908, newest 50)

- [SDR CALA2026101920447](https://openairdocs.org/sdr/CALA2026101920447), Oct 15, 2026: Boeing 7673CB. LIGHT. INTERMITTENT. ELECTRICAL BURNING ODOR AROUND ROW 15C. RAN SMOKE FIRE FUMES CHECKLIST. ODOR PERSISTED. CONDITIONAL INSPECTION (EC0500-0 (N686UA)
- [SDR CALA2026100720183](https://openairdocs.org/sdr/CALA2026100720183), Oct 6, 2026: Boeing 777224. BATTERY PACK. NO TEST. BATTERY CAPACITY CHECK FAILED. EMERGENCY LIGHT BATTERY PACK M33424, REPLACED AND CHECKED NORMAL IAW AMM 33-51-06. (N78008)
- [SDR IPXA2026092532696](https://openairdocs.org/sdr/IPXA2026092532696), Sep 25, 2026: Boeing 767300. BATTERY PACK. UNKNOWN. EMERGENCY LIGHT BATTERY PACK IN SPARE BULB COMPARTMENT MISSING DUE DATE PLACARD. REMOVED AND REPLACED BATTERY PACK ASSY  (N913UP)
- [SDR CALA2026092419777](https://openairdocs.org/sdr/CALA2026092419777), Sep 16, 2026: Airbus A321271NX. SWITCH. INTERMITTENT. NO SMOKING AND EMERGENCY EXIT SIGNS NOT WORKING PROPERLY IN AUTO. COMPLIED WITH DDP COMPLIED WITH DDP DM WORK WITH MEL L (N54570)
- [SDR KCSA2026070337](https://openairdocs.org/sdr/KCSA2026070337), Jul 3, 2026: Boeing 777F. BALLAST. INOPERATIVE. OPBC L STATUS MSG. PERFORMED FIM 23-93 TASK 844 IAW FIM. MSG CLEARED. SYSTEM OP’S NORMAL. (N776CK)
- [SDR R61A2026063000183](https://openairdocs.org/sdr/R61A2026063000183), Jun 30, 2026: Emb ERJ170200LR. BATTERY. NO TEST. EMERGENCY LIGHT BATTERY FAILED FUNCTIONAL CHECK. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY. (N114HQ)
- [SDR CALA2026050716065](https://openairdocs.org/sdr/CALA2026050716065), May 6, 2026: Boeing 777224. BATTERY. NO TEST. L4 DOOR, M33407 EMER LIGHT BATTERY CAPACITY CHECK FAILED. THE BATTERY WAS REPLACED AND TESTED NORMAL IAW AMM 33-51-06. (N78013)
- [SDR SWIA2026040875681](https://openairdocs.org/sdr/SWIA2026040875681), Apr 8, 2026: Cndair CL6002D24. BALLAST. BURNED. ELECTRICAL BURNING SMELL IN BACK MID WAY THRU CABIN, NO SMOKE (FLIGHT 4055). TROUBLESHOT "ELECTRICAL BURNING SMELL IN BA (N897SK)
- [SDR CALA2026040715186](https://openairdocs.org/sdr/CALA2026040715186), Apr 7, 2026: Boeing 777222. BALLAST. FAILED. FLT ATTENDANTS REPORTED SMELL OF PLASTIC BURN IN B ZONE GALLEY UNABLE TO GET DEBRIEFED BY PILOTS. FA WORKING MID GALLEY  (N787UA)
- [SDR CALA2026040315059](https://openairdocs.org/sdr/CALA2026040315059), Apr 3, 2026: Boeing 737924ER. LIGHT. ILLUMINATED. FWD ENTRY DOOR LIGHT IN OVRHEAD CAME ON DURING LANDING. ITEM PLACED ON MEL, INDICATION ONLY. REF FIM 52-10 TSK 801 & WDM (N69810)
- [SDR YENA2026022300230](https://openairdocs.org/sdr/YENA2026022300230), Feb 22, 2026: Airbus A320232. LAMP. BURNED. FLT # 1371 LGA-FLL. "SMOKY SMELL IN AFT GALLY ON ARR F3 REPORTED AFTER LIGHTS TURNS OFF SMELL WENT AWAY.; INSPECTED AND  (N531JL)
- [SDR DALA2026011400339](https://openairdocs.org/sdr/DALA2026011400339), Jan 12, 2026: Airbus BD5001A11. LIGHT. BURNED OUT. C/B FWD MAINT LT POWER 1 TRIPPED. T/S FOUND BREAKER CDC3-4-10 POPPING FOUND OXYGEN MAINT LIGHT BURNED OUT AND CHARRED. R (N322DU)
- [SDR CALA2026010612691](https://openairdocs.org/sdr/CALA2026010612691), Jan 4, 2026: Boeing 737824. SWITCH. FAULTED. LAV E EMERGENCY LIGHT STUCK ON UPON ARRIVAL TO AC FA REPORTS LAV E CALL LIGHT COULD NOT BE EXTINGUISHED. FOUND CALL SWIT (N76533)
- [SDR CALA2025111811314](https://openairdocs.org/sdr/CALA2025111811314), Nov 16, 2025: Boeing 7378. LIGHT. NO DISCREPANCY. AFT FA EMERGENCY CALL LIGHT FLICKERED ON/OFF. TESTED AFT FA EMERGENCY CALL LIGHT, LIGHT NOT FLICKERING. NO DEFECT NOTED. (N17300)
- [SDR N6WA2025111203](https://openairdocs.org/sdr/N6WA2025111203), Nov 11, 2025: Cndair CL6002C11. BALLAST. FAILED. SMOKE/FUMES COMING FROM 1C OVERHEAD BIN (AIRCRAFT IS IN SBM) (CLIMB PASSING THRU 220, NO MEDICAL ATTENTION REQUIRED). DE (N535GJ)
- [SDR SWIA2025102000019](https://openairdocs.org/sdr/SWIA2025102000019), Oct 19, 2025: Cndair CL6002C10. BALLAST. FAILED. ON DECENT PASSENGERS MENTIONED A BURNT ORDER. CONFIRMED BY THE FLIGHT ATTENDANT. PASSENGERS IN ROW 16 COMPLAINED THAT TH (N758SK)
- [SDR DXTA2025101305257](https://openairdocs.org/sdr/DXTA2025101305257), Oct 9, 2025: Cndair CL6002B16. POWER SUPPLY. DEFECTIVE. THE LIGHTS WERE FLASHING ALL OVER THE COCKPIT, AND LATER THERE WAS A BURNING ELECTRICAL SMELL. WE SHUT DOWN THE AIRPLANE (N263QS)
- [SDR CALA2025100609615](https://openairdocs.org/sdr/CALA2025100609615), Oct 4, 2025: Boeing 737824. GUARD. BROKEN. FLIGHT DECK EMERGENCY LIGHT SWITCH GUARD ON P5 PANEL BROKEN. IPC 33-51-00-02 ITEM 15 REPLACED EMERGENCY LIGHT SWITCH GUA (N73278)
- [SDR CALA2025090908674](https://openairdocs.org/sdr/CALA2025090908674), Sep 6, 2025: Boeing 737824. CONTACT. SHORTED. GATE RETURN, WHEN SETTING TAKE OFF PWR ADIRU LIGHTS ILLUMINATED , MCP FLICKERED FOLLOWED WITH NUMEROUS WARNING LIGHTS IL (N14235)
- [SDR CALA2025090508495](https://openairdocs.org/sdr/CALA2025090508495), Sep 4, 2025: Airbus A320232. CIDS. FAULTED. EMER EXIT SIGN ON OVER WING AND OVER MCD STAYS ILLUMINATED ALL OTHER LTS REMAIN EXTIGUISHED TURNED OFF EMEGENCY LIGHT SW (N492UA)
- [SDR HNAA2025082500580](https://openairdocs.org/sdr/HNAA2025082500580), Aug 24, 2025: Emb EMB145LR. CONTROL MODULE. ODOR. LH SIDEWALL LIGHTS AFT OF 2A INOP. WITH ELECTRICAL BURNING SMELL. R & R CONTROL MODULE ASY IAW AMM 33-21-01 OPS CHECK IA (N692AE)
- [SDR ASAA2025082160364](https://openairdocs.org/sdr/ASAA2025082160364), Aug 21, 2025: Boeing 737890. CONTROL PANEL. DETACHED. MASTER CALL LIGHT PANEL IN FWD GALLEY CEILING FELL OFF. GROUNDED - YES. REPLACED MASTER CALL/EXIT SING LIGHT ASSY REF CM (N558AS)
- [SDR CALA2025081807872](https://openairdocs.org/sdr/CALA2025081807872), Aug 15, 2025: Boeing 777222. LENS. FAULTED. EMERGENCY LIGHT 4R INOPERATIVE, EMERGENCY LIGHT AT DOOR 4R CHECKED NORMAL, ACTUAL DISCREPANCY WAS RJ DOOR LAVATORY CALL  (N209UA)
- [SDR WX0A2025072532513](https://openairdocs.org/sdr/WX0A2025072532513), Jul 23, 2025: Airbus A319111. BATTERY. NO TEST. (AIRCRAFT NOT GROUNDED) BATTERY FAULT INDICATION DURING EPSU BITE TEST / REMOVED AND REPLACED EPSU BATTERIES, REF WO5191 (N326NV)
- [SDR CALA2025060605325](https://openairdocs.org/sdr/CALA2025060605325), Jun 4, 2025: Boeing 777222. BALLAST. ODOR. SUSPICIOUS ODOR REPORTED DURING INITIAL CLIMB BY B ZONE FAS. DIS APATED CREW DEBRIEF: CAPT STATED SMELL APPEARED DURING  (N797UA)
- [SDR CALA2025053005121](https://openairdocs.org/sdr/CALA2025053005121), May 28, 2025: Boeing 737824. POWER SUPPLY. FAILED. EMERGENCY LIGHT BATTERY PACK FOR SEATS 22ABC TO 30ABC FLOOR PROXIMITY LIGHTS IS WEAK. SUPPORT TASK NSA EMX NR 00053 COMP (N76523)
- [SDR CALA2024120303012](https://openairdocs.org/sdr/CALA2024120303012), Dec 2, 2024: Boeing 777222. BATTERY. NO TEST. DR 3R M33401 EMER LIGHT BATTERY TEST FAIL. EMER LIGHT BATTERY REPLACED AND TESTED NORMAL IAW AMM 33-51-06. (N780UA)
- [SDR CALA2024111102821](https://openairdocs.org/sdr/CALA2024111102821), Nov 8, 2024: Boeing 777222. BATTERY PACK. NO TEST. B777-33-3-7019 CABIN - R/H DOOR NO.4 EMERGENCY LIGHT BATTERY PACK (M33408) CAPACITY CHECK FAILED. R/H DR4 EMERGENCY LT B (N224UA)
- [SDR CALA2024082900509](https://openairdocs.org/sdr/CALA2024082900509), Aug 26, 2024: Boeing 777224. BATTERY. NO TEST. DR 2R O/H FWD (M33097) BATTERY FND TEST FAILED TRANSFER REF NON - ROUTINE WO.3676780 AND ORIG BY V926672 DR 2R O/H FWD ( (N78005)
- [SDR CALA2024081200402](https://openairdocs.org/sdr/CALA2024081200402), Aug 10, 2024: Boeing 767322. CONTROL PANEL. UNSERVICEABLE. SMOKE AND FUMES IN FD WHEN TAKING RWY. AIRCRAFT BACK TO STAND AS SMIKE IN THE COCKPIT NOTICED - FOUND C B N6 OVERHEAD PA (N659UA)
- [SDR DALA2024071607191](https://openairdocs.org/sdr/DALA2024071607191), Jul 13, 2024: Boeing 737832. LAMP. INOPERATIVE. (LOG 5310886) 5 EMERGENCY ESCAPE HATCH HANDLE LAMPS INOPERATIVE. RELAMPED DISCREPANT EMERGENCY ESCAPE HATCH HANDLE LIGHT (N3764D)
- [SDR CALA2024053101650](https://openairdocs.org/sdr/CALA2024053101650), May 30, 2024: Airbus A319131. BATTERY PACK. DISCHARGED. EMERGENCY EPSU BATTERY AFT L FAILS OPERATIONAL CHECK. REF TO PEMCO NR 15402.0026 REMOVED AND REPLACED EPSU BATTERY AT 13 (N805UA)
- [SDR CALA2024052001537](https://openairdocs.org/sdr/CALA2024052001537), May 19, 2024: Boeing 737824. LIGHT. INOPERATIVE. ENTRY LIGHT DOES NOT TURN ON FWD CABIN OHD STWG CREW REPORTED FWD CEILING LIGHTS DON''T GO TO BRIGHT, PLACARDED PLACARDE (N37274)
- [SDR CALA2024041901149](https://openairdocs.org/sdr/CALA2024041901149), Apr 18, 2024: Boeing 777222. BATTERY PACK. NO TEST. DR 2L M33099 EMER LIGHT BATTERY CHARGER TEST FAIL - TRANSFER REFER NON-ROUTINE WO.3041425 - AND ORIGINATED BY EMP DR 2L  (N776UA)
- [SDR CALA2024041901145](https://openairdocs.org/sdr/CALA2024041901145), Apr 18, 2024: Boeing 777222. BATTERY PACK. NO TEST. B777-33-3-7019 - DR 4L M33407 EMER LIGHT BATTERY TEST FAIL TRANSFER REFER - NONROUTINE WO.3041433 AND ORIGINATED BY. DR  (N776UA)
- [SDR YENA2024041100515](https://openairdocs.org/sdr/YENA2024041100515), Apr 11, 2024: Airbus A321271N. CIDS. WARNING MESSAGE. FLT#34, CDG-BOS. (ETOPS) 'CIDS CAUTION ON FAP ( FLIGHT ATTENDANT PANEL (FAP) 10) OTHER FUNCTIONS (ON FAP) ) PAX CALL LIG (N4074J)
- [SDR CALA2024031800766](https://openairdocs.org/sdr/CALA2024031800766), Mar 16, 2024: Boeing 777222. BATTERY PACK. NO TEST. B777-33-3-7019 - DR L3 M33406 EMER LIGHT BATTERY TEST FAIL TRANSFER REFER NON-ROUTINE WO.2913795 AND ORIGINATED BY DR L3 (N210UA)
- [SDR UIEA2024030100140](https://openairdocs.org/sdr/UIEA2024030100140), Mar 3, 2024: Boeing 74746NF. LAMP. BROKEN. FOUND EMERGENCY LIGHTS L5735, L1853 AND L1854 LAMP BROKEN(<P>EMERGENCY LIGHTS L5735, L1853 AND L1854 LAMP REPLACED AND T (N454PA)
- [SDR CALA2024022600532](https://openairdocs.org/sdr/CALA2024022600532), Feb 22, 2024: Boeing 737932ER. BATTERY PACK. NO TEST. ALL EMERGENCY LIGHT BATTERY PACKS FAILED CAPACITY TEST. (M02816 REF TO PEMCO NR 14647.0043. REMOVED AND REPLACED BATTERY (N64844)
- [SDR CALA2024011500110](https://openairdocs.org/sdr/CALA2024011500110), Jan 13, 2024: Boeing 767424ER. BATTERY PACK. DISCHARGED. CTR PAX SEAT 30 TO 37 FLOOR PROXIMITY EMER LT FOUND DIM (BAT EQ#M732) TRANSFER REF. NON-ROUTINE HX NRC WO.2709101 AND CA (N78060)
- [SDR CALA2023122603735](https://openairdocs.org/sdr/CALA2023122603735), Dec 22, 2023: Boeing 777224. BATTERY PACK. NO TEST. CABIN DOOR L4 EMER LT POWER PACK M33407 CAPACITY CHK FAIL REF HX NR WO.2594346, CABIN L4 EMER LT BATTERY PACK M33407 REP (N78004)
- [SDR CALA2023121303635](https://openairdocs.org/sdr/CALA2023121303635), Dec 7, 2023: Airbus A319132. LENS. WRONG PART. F/A SAYS EMER EXIT SIGN OVER ROW 1 - DOES NOTHAVE REQUIRED ARROW S REMOVED AND REPLACED CABIN ROW 1 OVERHEAD EXIT LENS . (N895UA)
- [SDR CALA2023120103525](https://openairdocs.org/sdr/CALA2023120103525), Nov 29, 2023: Boeing 737724. BATTERY PACK. FAILED. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACKS AT MULTIPLE LOCATIONS IAW AMM 33-51-06. OPS CHECK GOOD. REF TO PEMCO  (N13716)
- [SDR IPXA2023112058316](https://openairdocs.org/sdr/IPXA2023112058316), Nov 18, 2023: Doug MD11F. UNKNOWN. UNKNOWN. EMER PWR TST FAIL FOLLOWED FIM 24-30-03-00 AND PERFORMED THE OPS TEST OF THE BATTERIES IAW AMM 24-34-02. TEST OK. (N274UP)
- [SDR DALA2023110709175](https://openairdocs.org/sdr/DALA2023110709175), Nov 4, 2023: Boeing 767332. UNKNOWN. UNKNOWN. SHIP 1606 LEFT CABIN READING/CALL LIGHTS STROBING ON/OFF. METAL SMELL AROUND ROW 20. DISAPATED AFTER POWER REMOVED. CORR (N16065)
- [SDR KCSA202311021131](https://openairdocs.org/sdr/KCSA202311021131), Nov 2, 2023: Boeing 7474B5F. COVER. BROKEN. MDSS BLUE LIGHT COVER IS BROKEN (N701CK)
- [SDR CALA2023103003226](https://openairdocs.org/sdr/CALA2023103003226), Oct 29, 2023: Boeing 777222. BATTERY PACK. DISCHARGED. EMER LT BATTERY PACK (M33099) AT DR 2L FOUND CAPACITY FUNCTIONAL CHECK FAIL REF HX NR WO.2295826, ORIG BY V920586 EMER L (N222UA)
- [SDR DALA2023101608496](https://openairdocs.org/sdr/DALA2023101608496), Oct 16, 2023: Airbus A330323. UNKNOWN. UNKNOWN. SHIP 3314 DOOR 604 CABIN PRESSURE LIGHT COVER NOT ATTACHED. CORRECTIVE ACTION: REINSTALLED COVER. (0019533) (N814NW)
- [SDR DALA2023091107427](https://openairdocs.org/sdr/DALA2023091107427), Sep 8, 2023: Airbus A330223. UNKNOWN. UNKNOWN. SHIP 3360 OVERHEAD PANEL EXT LIGHT TO ANN LIGHT THAT SECTION OF THE INTEGRAL LIGHT FELL DOWN. CORRECTIVE ACTION: ADJUSTE (N860NW)
- [SDR CALA2023082502636](https://openairdocs.org/sdr/CALA2023082502636), Aug 24, 2023: Boeing 7379. MODULE. FAULTY. MACH TRIM FAIL LIGHT DOES NOT ILLUMINATE WITH MASTER LIGHT TEST. PERFORMED BITE LIBRARY TEST 33 MACH TRIM IAW AMM TRIM F (N37502)

All 908: https://openairdocs.org/jasc/3300/reports.md

## Other codes in chapter 33

- [JASC 3310](https://openairdocs.org/jasc/3310): Flight Compartment Lighting (1,057 reports)
- [JASC 3320](https://openairdocs.org/jasc/3320): Passenger Compartment Lighting (2,972 reports)
- [JASC 3330](https://openairdocs.org/jasc/3330): Cargo Compartment Lighting (64 reports)
- [JASC 3340](https://openairdocs.org/jasc/3340): Exterior Lighting (1,507 reports)
- [JASC 3350](https://openairdocs.org/jasc/3350): Emergency Lighting (225,468 reports)
- [JASC 3397](https://openairdocs.org/jasc/3397): Light System Wiring (22,639 reports)

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