# Service difficulty reports: N495AS

A list on [N495AS](https://openairdocs.org/aircraft/N495AS.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

Page 1 of 4 · 154 reports

- [SDR ASAA2025051258031](https://openairdocs.org/sdr/ASAA2025051258031.md): Cover · missing · May 12, 2025 · N495AS · Boeing 737990ER · Emergency Lighting
  > MID CABIN OVERHEAD LIGHT COVER MISSING NEAR ROW 18. GROUNDED - YES. (RESOLVED ON W/O: 2052972 TASKCARD: N/R-00001) INSTALLED NEW EMERGENCY LIGHT LENS COVER NEAR ROW 18 IAW AMM 33-51-03 OPS CK GOOD NO DEFECTS NOTED PLACARDS REMOVED THIS ACTION CLEARS MEL 33-15
- [SDR ASAA2024100953086](https://openairdocs.org/sdr/ASAA2024100953086.md): Lamp · inoperative · Oct 9, 2024 · N495AS · Boeing 737990ER · Emergency Lighting
  > EXTERIOR EMERGENCY EXIT LIGHT AT L2 DOOR INOP. GROUNDED - YES. RELAMPED EXTERIOR EMERGENCY EXIT LIGHT AT L2 DOOR IAW B737NG AMM 33-51-04. LIGHT CHECK GOOD.
- [SDR ASAA2024100252956](https://openairdocs.org/sdr/ASAA2024100252956.md): Power Supply · malfunctioned · Oct 2, 2024 · N495AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT POWER SUPPLY M1676 REQUIRES REPLACEMENT. GROUNDED - YES. REMOVED & REPLACED POWER SUPPLY M1676 IAW B737-900 AMM 33-51-06-960-806. OP CHECK GOOD.
- [SDR ASAA2024100252955](https://openairdocs.org/sdr/ASAA2024100252955.md): Power Supply · malfunctioned · Oct 2, 2024 · N495AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT POWER SUPPLY M2335 REQUIRES REPLACEMENT. GROUNDED - YES. REMOVED & REPLACED POWER SUPPLY M2335 IAW B737-900 AMM 33-51-06-960-806 OP CHECK GOOD.
- [SDR ASAA2024100252954](https://openairdocs.org/sdr/ASAA2024100252954.md): Power Supply · inoperative · Oct 2, 2024 · N495AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT POWER SUPPLY M1670 REQUIRES REPLACEMENT. GROUNDED - YES. REMOVED & REPLACED POWER SUPPLY M1670 IAW B737-900 AMM 33-51-06-960-806OP CHECK GOOD.
- [SDR ASAA2024100252953](https://openairdocs.org/sdr/ASAA2024100252953.md): Power Supply · inoperative · Oct 2, 2024 · N495AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT POWER SUPPLY M1671 REQUIRES REPLACEMENT. GROUNDED - YES. REMOVED & REPLACED POWER SUPPLY M1671 IAW B737-900 AMM 33-51-06-960-806OP CHECK GOOD.
- [SDR ASAA2024091352632](https://openairdocs.org/sdr/ASAA2024091352632.md): Skin · corroded · Sep 13, 2024 · N495AS · Boeing 737990ER · Fuselage Main, Plate/Skin
  > EXTERIOR FUSELAGE SKIN BS.500E TO 500K STR.0 HAS SIGNS OF CORROSION AROUND BELLY DRAINS (5EA.CIRCLED). GROUNDED - YES. REMOVED CORROSION FROM 5 EACH LOCATIONS IAW B737-900 ER SRM 51-10-02. ORIG THICKNESS.063 IAW B737-900 ER SRM 53-30-01, LOWEST READINGS AT ST
- [SDR ASAA2024091352631](https://openairdocs.org/sdr/ASAA2024091352631.md): Skin · corroded · Sep 13, 2024 · N495AS · Boeing 737990ER · Fuselage Main, Plate/Skin
  > EXTERIOR FUSELAGE SKIN BS.360 TO 500E STR.0 HAS SIGNS OF CORROSION AROUND BELLY DRAINS (9EA.CIRCLED). GROUNDED - YES. REMOVED CORROSION FROM 9(EACH) LOCATIONS IAW B737-900 ER SRM 51-10-02, ORIG THICKNESS.063 IAW B737-900 ER SRM 53-30-01, LOWEST READINGS AT ST
- [SDR ASAA2024030652962](https://openairdocs.org/sdr/ASAA2024030652962.md): Skin · damaged · Mar 6, 2024 · N495AS · Boeing 737990ER · Fuselage Main, Plate/Skin
  > TRANSFERRED FROM MIG 2C-40-0054076 EVIDENCE OF POSSIBLE LIGHTNING STRIKE FUSELAGE SEC 43, STA 500K S-1. GROUNDED - YES. REMOVED BLIND RIVET. REAMED HOLE/CUTOUT DAMAGE AND INSTALLED REPAIR DOUBLER IAW B737-900ER SRM 53-00-01-2R-20 CATEGORY B REPAIR ALASKA STEVE
- [SDR ASAA2024030652750](https://openairdocs.org/sdr/ASAA2024030652750.md): Skin · damaged · Mar 6, 2024 · N495AS · Boeing 737990ER · Fuselage Main, Plate/Skin
  > TRANSFFERED FROM MIG 2C # 40-0054076 FOUND EVIDENCE OF POSSIBLE LIGHTNING STRIKE FUSELAGE SECTION 41, STA 312, S-2R. GROUNDED - YES. (ITEM RESOLVE UNDER MDDR: 60921664) REMOVED BLIND RIVET. REAMED HOLE/CUT OUT DAMAGE AND INSTALLED REPAIR DOUBLER IAW B737-900ER
- [SDR ASAA2023103045828](https://openairdocs.org/sdr/ASAA2023103045828.md): Unknown · unknown · Oct 25, 2023 · N495AS · Boeing 737990ER · Autopilot System
  > AUTOLAND NOT SUCCESSFUL. AIRCRAFT FLEW ILS FINE TO TOUCHDOWN. FLARE WAS SMOOTH, AS WAS TOUCHDOWN QUARTERING LEFT TAILWIND AT 4 KTS. THE MAINS STRADDLED THE LEFT 1000' MARKER LEFT OF CENTERLINE. THE DRIFT TO THE LEFT OCCURRED DURING THE FLARE. AUTOPILOT WAS DIS
- [SDR ASAA2023082044688](https://openairdocs.org/sdr/ASAA2023082044688.md): Unknown · unknown · Aug 20, 2023 · N495AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > FOLLOW-UP TO HISTORY OF RIGHT SIDE (R2) SLIDER WINDOW OVERHEAT LIGHTS ILLUMINATING IN FLIGHT. GROUNDED - YES. INSPECTED R2 WINDOW HEATING FOR BURN/HEAT MARK DEFECTS, NONE. REPOSITIONED TO SPARE SENSOR REF AMM 30-41-00-420-801. OPERATIONAL TEST PER AMM 30-41-00
- [SDR ASAA2023081444608](https://openairdocs.org/sdr/ASAA2023081444608.md): Unknown · unknown · Aug 14, 2023 · N495AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > ON TAXI RIGHT "SIDE" WINDOW OVERHEAT LIGHT ILLUMINATED. LIGHT EXTINGUISHED AFTER RUNNING QRH PROCEDURE. GROUNDED - YES. ACCOMPLISHED WINDOW HEAT BITE CHECK PER FIM 30-41 TASK 801. NO FAULTS FOUND AND PERFORMED WINDOW HEAT SYS TEST PER AMM 30-41-10-710-801. WIN
- [SDR ASAA2023081244754](https://openairdocs.org/sdr/ASAA2023081244754.md): Seal · leaking · Aug 12, 2023 · N495AS · Boeing 737990ER · Turbine Engine Oil System
  > #2 ENGINE OIL TREND DATA SHOWS OIL CONSUMPTION TO GREATER THAN EXPECTED. (#PRI2/ETOPS)ENGINE POWER RUN REQUIRED. GROUNDED - YES. PERFORMED BORO ON HPC 1 AND 2, FOUND OIL STAINS ON STAGE 2, NOT WETNESS. NO OIL EVIDENCE ON BOOSTER 3 AND 4. REF 72-00-00 TSR 71481
- [SDR ASAA2023081044559](https://openairdocs.org/sdr/ASAA2023081044559.md): Unknown · unknown · Aug 10, 2023 · N495AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > RIGHT SIDE WINDOW OVERHEAD CAUTION LIGHT ILLUMINATED JUST AFTER TAKEOFF - RAN QRH WAITED 5 MINUTES WITH IT OFF / TURNED BACK ON - OPS CHECK GOOD. GROUNDED - YES. WINDOW HEAT SYSTEM OPS CHECKS OK. REF AMM 30-41-00.
- [SDR ASAA2023080444423](https://openairdocs.org/sdr/ASAA2023080444423.md): Unknown · unknown · Aug 4, 2023 · N495AS · Boeing 737990ER · Engine Starting System
  > #1 ENG FAULT CODE 73-30311, THE START SWITCH SIGNAL AND ARINC BUS DATA DISAGREE, SHORT TIME FAULT. GROUNDED - YES. REF FIM 73-24 TASK 813, DURING INITIAL EVALUATION PERFORMED EEC TESTS IN ALL SWITCH POSITIONS FOUND NO FAULTS, OPS NORMAL. PER FIM THIS WAS AN IN
- [SDR ASAA2023080344409](https://openairdocs.org/sdr/ASAA2023080344409.md): Unknown · unknown · Aug 3, 2023 · N495AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > RT SIDE (R2) WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. QRH PROCEDURE PERFORMED. NORMAL OPS RESTORED.
- [SDR ASAA2023072744303](https://openairdocs.org/sdr/ASAA2023072744303.md): Unknown · unknown · Jul 27, 2023 · N495AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > RIGHT SIDE WINDOW HEAT INOP. GROUNDED - YES. WINDOW HEAT OPERATING NORMAL.
- [SDR ASAA2023072644249](https://openairdocs.org/sdr/ASAA2023072644249.md): Unknown · unknown · Jul 26, 2023 · N495AS · Boeing 737990ER · Cabin Cooling System
  > RIGHT PACK LIGHT IS STAYIN ILLUMINATED AFTER MASTER CAUTION RESET. GROUNDED - YES. VERIFIED PROPER PLACEMENT OF LOWER DRIVE ARM AND MADE THE PROPER ADJUSTMENT PER MEL 21-5D. RAN PFTC PER TASK 21-61-00-740 ERASED EXISTING FAULTS OPS CHECK GOOD FOR MASTER CAUTIO
- [SDR ASAA2023072544247](https://openairdocs.org/sdr/ASAA2023072544247.md): Actuator · malfunctioned · Jul 25, 2023 · N495AS · Boeing 737990ER · Cabin Cooling System
  > RIGHT PACK LIGHT ILLUMINATED AT FL350, COMPLIED WITH QRH PROCEDURE. EXTINGUISHED ON TRIP RESET INITIALLY BUT CAME BACK ON. COMPLETED QRH STEPS TO INCLUDE CLOSING THE ISOLATION VALVE-WITH RIGHT PACK SHUT DOWN THE RAM DOOR REMAINED FULL OPEN. GROUNDED - YES. (R
- [SDR ASAA2023072344209](https://openairdocs.org/sdr/ASAA2023072344209.md): Unknown · unknown · Jul 23, 2023 · N495AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > RT SIDE WINDOW OVERHEAT. GROUNDED - YES. RAN QRH AND CONDITION CLEARED.
- [SDR ASAA2023071644113](https://openairdocs.org/sdr/ASAA2023071644113.md): Eec · faulty · Jul 16, 2023 · N495AS · Boeing 737990ER · Fuel Controlling System
  > ENG CONTROL LIGHT ILLUMINATED ON OVERHEAD PANEL WHEN STARTING #1 ENG ON TAXI OUT. GROUNDED - YES. COMPLIED WITH EEC BITE PROCEDURE FIM 73-00-TASK 801. FOUND FAULT CODE 73-31391, COMPLIED WITH FIM 73-22 TASK 807. AIRPLANE MODLE SIGNAL IS OUT OF RANG. CLEANED NO
- [SDR ASAA2023070743933](https://openairdocs.org/sdr/ASAA2023070743933.md): Battery Pack · inoperative · Jul 7, 2023 · N495AS · Boeing 737990ER · Emergency Lighting
  > L2 DOOR EXTERIOR EMERGENCY LIGHT DOES NOT ILLUMINATE. GROUNDED - YES. REMOVED AND REPLACED AFT CEILING PANEL BATTERY PACK FOR LEFT SIDE EMERGENCY LIGHT POWER REF AMM 33-51-06. OPERATIONAL CHECK IS GOOD.
- [SDR ASAA2023070743930](https://openairdocs.org/sdr/ASAA2023070743930.md): Magnetic Seal · leaking · Jul 7, 2023 · N495AS · Boeing 737990ER · Hydraulic System, Main
  > REMOVED ENGINE DRIVEN HYD PUMP FOR SEAL LEAK PER TSR714593. FOUND HYD PUMP SHAFT SEAL LEAKING. GROUNDED - YES. REMOVED AND INSTALLED #1 ENG EDP MAGNETIC SEAL REF 72-60-00 AMM. REPLACED #1 ENG EDP REF AMM 29-11-11. PERFORMED EDP INSTALL TEST NO DEFECTS NOTED. N
- [SDR ASAA2023052043300](https://openairdocs.org/sdr/ASAA2023052043300.md): Unknown · unknown · May 20, 2023 · N495AS · Boeing 737990ER · Flight Management Computing Hardware System
  > ATC CLEARED US DIRECT TILLT. BOTH CDU'S SHOWED DIRECT TILLT, BUT THE FO MAP DISPLAY STILL SHOWED THE PREVIOUS WAYPOINT, RBL, AND LNAV WAS STILL PROCEEDING DIR. RBL WITH AUTOPILOT B ENGAGED. THIS PERSISTED FOR APPROX 1 MIN, THEN THE FO MAP SYNCED UP AND THINGS
- [SDR ASAA2023041042792](https://openairdocs.org/sdr/ASAA2023041042792.md): Spacer · delaminated · Apr 10, 2023 · N495AS · Boeing 737990ER · Turbine Engine Air Inlet Section
  > DURING #1 ENGINE FAN LUBE ASA TASK CARD 78472010 FOUND FRONT SPINNER CONE EROSION REQUIRES REPLACEMENT, AND # 7 FAN BLADE SPACER RUBBER IS DELAMINATING. GROUNDED - YES. REPLACED SPACER FOR #7 FAN BLADE, AND REPLACED FRONT SPINNER CONE #1 ENGINE REF ASA TASK CA
- [SDR ASAA2023013141737](https://openairdocs.org/sdr/ASAA2023013141737.md): None · failed · Jan 31, 2023 · N495AS · Boeing 737990ER · Autopilot System
  > FIRST OFFICERS COURSE SELECTOR KNOB DOES NOT WORK. GROUNDED - YES. REPLACED MCP REF B737-900 AMM 22-11-34, OPS NORMAL REF FMM 22-11-34-740-801.
- [SDR ASAA2023013041738](https://openairdocs.org/sdr/ASAA2023013041738.md): Unknown · unknown · Jan 30, 2023 · N495AS · Boeing 737990ER · Autopilot System
  > F/O COURSE SELSECOT WORKS INTERMITTENTLY. GROUNDED - YES. CLEANED MCP F/O CRS SEL POTENTIOMETER AND F/O COURSE SEL OPS RELIABLY IAW B737-900 AMM 22-11-34.
- [SDR ASAA2023010241381](https://openairdocs.org/sdr/ASAA2023010241381.md): Control Panel · intermittent · Jan 2, 2023 · N495AS · Boeing 737990ER · Autopilot System
  > MCP IAS/MACH ADJUSTER KNOB IS INTERMITTENT. ON MULTIPLE OCCASIONS THE CREW WAS UNABLE TO SET THE PROPER SPEED ON THE FIRST COUPLE OF ATTEMPTS BUT THE PROBLEM WOULD CLEAR AND ALLOW PROPER OPERATION. GROUNDED - YES. RMVD AND INSTALLED NEW MCP. PERFORMED SYS OPS
- [SDR ASAA2022111540785](https://openairdocs.org/sdr/ASAA2022111540785.md): Spacer · debonded · Nov 15, 2022 · N495AS · Boeing 737990ER · Turbine Engine Air Inlet Section
  > PER ASA T/C 78472010 #2 ENG FAN BLADE LUBE SPACERS #6, 8, 9, 11, 12, 13, 15, 18, 19, 20, 22 AND 24 ARE DISBONDED. GROUNDED - YES. REPLACED #6, 8, 9, 11, 12, 13, 15, 18, 19, 20, 22 AND 24 FAN BLADE LUBE SPACERS PER ASA T/C 78472010.
- [SDR ASAA2022091639980](https://openairdocs.org/sdr/ASAA2022091639980.md): Flow Sensor · faulty · Sep 16, 2022 · N495AS · Boeing 737990ER · Cabin Cooling System
  > AT CRUISE FLIGHT FL 340 THE LEFT DUCT PRESSURE CYCLES BETWEEN 30PSI AND 40PSI CONTINUOUSLY. THE CABIN RATE OF CLIMB VARIES BETWEEN +500 AND -500 FT/MINUTE AT THE SAME TIME THE PRESSURIZATION REMAINS CONSTANT AT 7500 CABIN ALT AND 7.8 PSI. GROUNDED - YES. REMOV
- [SDR ASAA2022090139796](https://openairdocs.org/sdr/ASAA2022090139796.md): Lamp · missing · Sep 1, 2022 · N495AS · Boeing 737990ER · Pneumatic Distribution System
  > ON CLIMB OUT R DUCT PRESSURE PEGGED AT 80 PSI CLIMB 40L/ 80+ R CRUISE 40L /45R DESCENT 20L/ 20R. WITH 40 PSI SPLIT. GROUNDED - YES. ACCOMPLISHED ASA TASK CARD NG-36WC-00002-2 #2 ENG BLEED AIR HEALTH CHECK. FAILED ENG BLEED CROSSOVER CHECK. REMOVED AND REPLACED
- [SDR ASAA2022083139749](https://openairdocs.org/sdr/ASAA2022083139749.md): Unknown · unknown · Aug 31, 2022 · N495AS · Boeing 737 · Pneumatic Distribution System
  > AT FL 380 PRESSURIZATION WAS AT MAX DIFFERENTIAL PSI. CABIN ALT WAS 7500' APPROX, AND CABIN VSI WAS CYCLING +/- 700 TO 800 FPM CONSTANTLY, DESCENDED TO FL 360 CABIN ALT STAYED ABOUT 7500, BUT DIFFERENTIAL WAS APPROX 7-8 PSI, COBIN VSI STEADIED OUT. NO ADVERSE
- [SDR ASAA2022082339634](https://openairdocs.org/sdr/ASAA2022082339634.md): None · faulty · Aug 23, 2022 · N495AS · Boeing 737 · Cabin Cooling System
  > RIGHT PACK ILLUMINATES ON MASTER RECALL, EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. REMOVED RH PACK TEMPERATURE CONTROL VALVE PER B737-900 AMM 21-51-10-000-801. INSTALLED TEMPERATURE CONTROL VALVE PER AMM 21-51-10-400-801.
- [SDR ASAA2022070138912](https://openairdocs.org/sdr/ASAA2022070138912.md): Regulator · leaking · Jul 1, 2022 · N495AS · Boeing 737990ER · Pneumatic Distribution System
  > REF ASA LG PG 60489947 WHILE ACCOMPLISHING ASA TC: NG-364C-0001 ENGINE BLEED AIR HEALTH CHECK. FOUND #2 ENG HIGH STAGE REGULATOR BODY LEAKING AIR. GROUNDED - YES. REMOVED #2 ENG HIGH STAGE REGULATOR REF B737-900 AMM 36-11-07. INSTALLED #2 ENG HIGH STAGE REGULA
- [SDR ASAA2022063038913](https://openairdocs.org/sdr/ASAA2022063038913.md): Shutoff Valve · leaking · Jun 30, 2022 · N495AS · Boeing 737990ER · Pneumatic Distribution System
  > AFTER TAKEOFF, RIGHT DUCT PRESSURE 10 LEFT DUCT PRESSURE 40. REMAINED THAT WAY THROUGHOUT CLIMB TO CRUISE ALTITUDE. GROUNDED - YES. AIR TURNBACK - REMOVED AND REPLACED #2 ENG PRSOV OPS AND LEAK CHECKED PER B737-900 AMM 36-11-04-400-801 (REF ASA LG PG 60489949)
- [SDR ASAA2022062438834](https://openairdocs.org/sdr/ASAA2022062438834.md): Bleed Valve · faulty · Jun 24, 2022 · N495AS · Boeing 737990ER · Compressor Bleed Control
  > WHILE ACCOMPLISHING TASK CARD 78273000 INTERROGATE THE FMC CDU FOR ENGINE FAULTS FOUND FAULT 75-30452 #2 ENGINE VBV POSITION SIGNALS DISAGREE SHORT TIME FAULT. GROUNDED - YES. ACCOMPLISHED VBV CHANNEL A & B WIRING CHECKS WITH NFF. REF B737-900 FIM 75-32 TASK 8
- [SDR ASAA2022060238537](https://openairdocs.org/sdr/ASAA2022060238537.md): Flow Sensor · faulty · Jun 2, 2022 · N495AS · Boeing 737990ER · Cabin Cooling System
  > TROUBLESHOOTING PER B737-900 FIM 21-33 TASK 802 FOR CABIN RATE OF CLIMB FLUCTUATION REF LP# 60269168 REQUIRES REPLACEMENT OF R/H PACK FLOW SENSOR. GROUNDED - YES. REMOVED & REPLACED R/H PACK SENSOR AS REQ REF B737-900 AMM 21-51-43 ACCOMP BITE TEST & PASSED REF
- [SDR ASAA2022060138552](https://openairdocs.org/sdr/ASAA2022060138552.md): Control Valve · faulty · Jun 1, 2022 · N495AS · Boeing 737990ER · Cabin Pressure Control System
  > IN CRUISE, CABIN RATE OF CLIMB FLUCTUATES FROM + 800 FPM TO -1000 FPM. LEVEL AT FL 390. ACCOMPANIED BY NOTABLE PRESSURE CHANGES AND NOISE. IN CLIMB & DESCENT, CABIN ROC FLUCTUATED BY +/- 500 FPM. OUTFLOW VALVE POSITION WAS NOT FLUCTUATING BUT DUCT PRESSURES WE
- [SDR ASAA2022060138539](https://openairdocs.org/sdr/ASAA2022060138539.md): Control Valve · faulty · Jun 1, 2022 · N495AS · Boeing 737990ER · Cabin Cooling System
  > TROUBLESHOOTING PER B737-900 FIM 21-33 TASK 802 FOR CABIN RATE OF CLIMB FLUCTUATION REF LP# 60269168 REQUIRES REPLACEMENT OF R/H TEMP CONTROL VALVE. GROUNDED - YES. REMOVED & REPLACED R/H TEMP CONTROL VALVE, REF B737-900 AMM TASK 21-51-10-000-801 & 21-51-10-40
- [SDR ASAA2022060138535](https://openairdocs.org/sdr/ASAA2022060138535.md): Shutoff Valve · faulty · Jun 1, 2022 · N495AS · Boeing 737990ER · Pressure Regulator/Outflow Valve
  > TROUBLESHOOTING PER B737-900 FIM 21-33 TASK 802 FOR CABIN RATE OF CLIMB FLUCTUATION REF LP# 60269168 REQUIRES REPLACEMENT OF L/H PACK FLOW CONTROL & SHUT OFF VLV. GROUNDED - YES. REMOVED & REPLACED L/H PACK FLOW CONTROL & SHUTOFF VLV REF B737-900 AMM 21-51-01.
- [SDR ASAA2022053138530](https://openairdocs.org/sdr/ASAA2022053138530.md): Control Module · faulty · May 31, 2022 · N495AS · Boeing 737990ER · Cabin Cooling System
  > LEFT PACK LIGHT ILLUMINATED DURING MASTER CAUTION RECALL AND EXTINGUISHES DURING RESET. GROUNDED - YES. REMOVED & REPLACED LH TEMP CONTROL REF B737-900 AMM TASK 21-51-10-000-801 & 21-51-10-400-801 LEAK & OPS CK OK.
- [SDR ASAA2022052438502](https://openairdocs.org/sdr/ASAA2022052438502.md): Actuator · faulty · May 24, 2022 · N495AS · Boeing 737990ER · Compressor Bleed Control
  > DURING ACCOMPLISHMENT OF ASA T/C# 78273000 FOUND #2 ENGINE WITH SHORT TIME FAULT FAULT MSG 75-30452 " THE VBV POSITION SIGNALS DISAGREE". GROUNDED - YES. PERFORMED B737-900 FIM 75-32 TASK 803 PARA. 5. ALL RESISTANCE VALUES WITHIN SPECIFIED RANGE. REMOVED VBV A
- [SDR ASAA2022050638217](https://openairdocs.org/sdr/ASAA2022050638217.md): Transceiver · inoperative · May 6, 2022 · N495AS · Boeing 737990ER · HF Communications System
  > HF #1 INOP. GROUNDED - YES. FOUND HF 1 TRANSCEIVER INOP, REMOVED AND REPLACED HF #1 TRANSCEIVER REF B737-900 AMM 23-11-21. OPS CHECK GOOD.
- [SDR ASAA2022033137858](https://openairdocs.org/sdr/ASAA2022033137858.md): None · none · Mar 31, 2022 · N495AS · Boeing 737990ER · Turbine Engine Air Inlet Section
  > PER T/C 78472010 #1 ENGINE FAN BLADE LUBE, SPACERS #2,4,6,10,16, AND 24 ARE DISBONDED. GROUNDED - YES. REPLACED AFOREMENTIONED SPACERS REF TC 78472010.
- [SDR ASAA2022031637697](https://openairdocs.org/sdr/ASAA2022031637697.md): Power Supply · faulty · Mar 16, 2022 · N495AS · Boeing 737990ER · Emergency Lighting
  > A/C RIGHT 25 & 30 AND A/C LEFT 27, EMERGENCY LIGHTS ON DURING FLIGHT. GROUNDED - YES. RMVD & RPLCD EMERGENCY LIGHT POWER SUPPLIES M2627 AND M2626 REF B737-900 AMM 33-51-01. OPS NML PER SAME.
- [SDR ASAA2022021637465](https://openairdocs.org/sdr/ASAA2022021637465.md): Unknown · unknown · Feb 16, 2022 · N495AS · Boeing 737990ER · Autopilot System
  > DURING PRE-FLIGHT, FOUND MCP DC1 CIRCUIT BREAKER OPEN, PANEL P18-1. GROUNDED - YES. PERFORM GVI OF C/B NO DEFECTS NOTED, RESET C/B PER B737-900 AMM 20-60-01 OPS CHECK NORMAL.
- [SDR ASAA2022021337423](https://openairdocs.org/sdr/ASAA2022021337423.md): Control Valve · inoperative · Feb 13, 2022 · N495AS · Boeing 737990ER · Cabin Cooling System
  > AT CRZ FL 370, DUCT PRESS L+R FLUCTUATING ALTERNATIVELY BETWEEN 30-40 PSI AT SAME TIME, CABIN ALT RATE CLIMBING 0.5-1.0 AND DESCENDING 0.5-1.0 20-30 SECONDS APART. GROUNDED - YES. AIR TURNBACK-DIVERSION TIME 115 MINUTES. REMOVED AND REPLACED L/H FLOW CONTROL V
- [SDR ASAA2022021037400](https://openairdocs.org/sdr/ASAA2022021037400.md): Modulating Valve · faulty · Feb 10, 2022 · N495AS · Boeing 737990ER · Cabin Cooling System
  > DURING CLIMB AT ABOUT FL290 CABIN RATE OF CLIMB BEGAN FLUCTUATING FROM 500 FPM DESCENT TO 1800 FPM CLIMB. IT WAS NEARLY CONSTANT UNTIL LEVEL OFF AT FL340. AS WITH THE PREVIOUS WRITE UPS, THE LEFT DUCT PRESSURE FLUCTUATED AS WELL. IN CRUISE IT IS MORE INTERMITT
- [SDR ASAA2022020837377](https://openairdocs.org/sdr/ASAA2022020837377.md): Shutoff Valve · faulty · Feb 8, 2022 · N495AS · Boeing 737990ER · Pneumatic Distribution System
  > AT CRUISE (FL360 M.78 85.9% N1) LEFT DUCT PRESSURE DROPS BY ABOUT 8 PSI EVERY FEW MINUTES (2 TO 8 MINS) WITH FLUCTUATIONS IN CABIN RATE OF CLIMB AND FLIGHT DECK AIR NOISE. DUCT PRESSURE FLUCTUATIONS WERE LESS FREQUENT AT FL 380 (M.79 89.2% N1) BUT STILL OCCU

Next page: https://openairdocs.org/aircraft/N495AS/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 n_number = 'N495AS' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N495AS/reports

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