# Service difficulty reports: N21723

A list on [N21723](https://openairdocs.org/aircraft/N21723.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 2 · 81 reports

- [SDR CALA2025121912270](https://openairdocs.org/sdr/CALA2025121912270.md): Fuse · blown · Dec 18, 2025 · N21723 · Boeing 737724 · Emergency Lighting
  > ALL THREE EMERGENCY EXIT LIGHTS INOPERATIVE AT THE LT OVERWING EXIT. REPLACED THE FUSES IN M1668 POWER SUPPLY 33-51-06-960-804.. EMERGENCY EXIT LIGHTS OP CKS GOOD.
- [SDR CALA2025121812222](https://openairdocs.org/sdr/CALA2025121812222.md): Battery Pack · no test · Dec 16, 2025 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY LIGHT BATTERY M1672 FAILS CAPACITY CHECK AND REQUIRES REPLACEMENT. REPLACED THE BATTERY M1672, OPS CHECKED GOOD IAW MM #33-51-06-200-801.
- [SDR CALA2025121812221](https://openairdocs.org/sdr/CALA2025121812221.md): Battery Pack · no test · Dec 16, 2025 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY LIGHT BATTERY M1669 FAILED A CAPACITY CHECK & REQUIRES REPLACEMENT. REPLACED EMERGENCY BATTERY M1669, OPS CHECKED GOOD IAW MM 33-51-06-200-801.
- [SDR CALA2025121712196](https://openairdocs.org/sdr/CALA2025121712196.md): Battery Pack · no test · Dec 16, 2025 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY LIGHT BATTERY M1675 FAILED A CAPACITY CHECK AND REQUIRES REPLACEMENT. REMOVED AND REPLACED THE BATTERY PACK IAW AMM 33-51-06-960-805, OPS CHKD GOOD.
- [SDR CALA2025121712194](https://openairdocs.org/sdr/CALA2025121712194.md): Battery Pack · no test · Dec 16, 2025 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY LIGHT BATTERY M1674 FAILED A CAPACITY CHECK AND REQUIRES REPLACEMENT. R & R THE BATTERY PACK IAW AMM 33-51-06-960-805 OPS CHK GOOD
- [SDR CALA2025102110339](https://openairdocs.org/sdr/CALA2025102110339.md): Winglet · ground damage · Oct 18, 2025 · N21723 · Boeing 737724 · Wing Main, Frame Structure
  > ON TAXI IN RIGHT WING HIT ANOTHER AIRCRAFT BEGAN REMOVAL OF RIGHT WINGLET REF AMM 57-21-21-000-801. UP TO STEP 2. H(3) ADD EMP:U425084 CONTINUED FROM STEP 2. H (4) AND REMOVED RH WINGTIP REF AMM 57-21-21-000-801 ADD EMP:U397485,438241 SDR INFO UPDATE ADD EMP:
- [SDR CALA2025090908657](https://openairdocs.org/sdr/CALA2025090908657.md): Slide · dislodged · Sep 5, 2025 · N21723 · Boeing 737724 · Escape Slide
  > FWD SVC DDOR SLIDE OUT OF BUSSEL SLIDE PACK NOT OUT OF SLIDE PACK COVER. EXCESS GIRT MATERIAL PULLED OUT DUE TO ROUGH HANDLING OF GIRT BAR. REPOSITIONED EXCESS GIRT MATERIAL AND POSITION TO CREATE Z FOLD REF MM SUBTASK 25-66-01-420-002 STEPS D. (2) (C) THRU
- [SDR CALA2025082007954](https://openairdocs.org/sdr/CALA2025082007954.md): Girt Bar · out of limits · Aug 16, 2025 · N21723 · Boeing 737724 · Emergency Equipment
  > DOOR 2R SLIDE IS TOUCHING CABIN FLOOR VERFIED WHEN WE TRIED TO CLOSE R2 DOOR THE SLIDE TOUCHING THE DOOR EDGE AND UNABLE TO CLOSE THE DOOR. REMOVED R2 DOOR SLIDE AND RESECURED GIRT MATERIAL. REINSTALLED AND CHECKED FOR CLEARANCE. NO HELP STILL THE DOOR SLIDE
- [SDR CALA2025070106122](https://openairdocs.org/sdr/CALA2025070106122.md): Roller · worn · Jun 28, 2025 · N21723 · Boeing 737724 · Engine Thrust Reverser
  > REVERSER LIGHT LIGHT ON, THRUST REVERSER OPS NORMALLY ENGINE 1 REQUESTING MEL 7801A FOR #1 ENGINE THRUST REVERSER. COMPLIED WITH. THRUST REVERSER LOCKED OUT. OBSERVED FOR STOW FAULT CHANGED SLEEVE STOWAGE PROX SENSOR ROLLERS REF IPC/AMM 78-34-01. NOTICED TH
- [SDR CALA2025051304641](https://openairdocs.org/sdr/CALA2025051304641.md): Sight Gauge · no discrepancy · May 9, 2025 · N21723 · Boeing 737724 · Escape Slide
  > FA REPORTS DOOR 1L SLIDE SIGHT GAUGE SHOWING BOTH GREEN AND RED. INSPECTED SLIDE PRESSURE REF AMM 25-66-01-200-801 AND FOUND SLIDE BOTTLE PRESSURE IS JUST WITHIN THE GREEN BAND.
- [SDR CALA2024122301620](https://openairdocs.org/sdr/CALA2024122301620.md): Bulb · inoperative · Dec 20, 2024 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY EXIT SIGN ABOVE EMERGENCY EXIT ROW LIGHT INOP ALL BULBS IN SIGN ARE BLOWN OUT, NEED 12 M&E PN 29-3351-3-0015 RE-LAMPED EMERGENCY EXIT SIGN NO FIX RE-LAMPED SIGN NO FIX REF 737WDM 33-51-11-8 & AMM TASK33-51-06-960-804 REPLACED BATTERY CHARGER M1668 FU
- [SDR CALA2024121901577](https://openairdocs.org/sdr/CALA2024121901577.md): Power Supply · no test · Dec 18, 2024 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY LIGHTS AT ISLE 12-21 ARE INOP REPLACED POWER SUPPLY M1669, EMERGENCY LIGHTS OPS CHECKS GOOD. REF WDM 33-51-21 AND AMM 33-51-06
- [SDR CALA2024102302705](https://openairdocs.org/sdr/CALA2024102302705.md): Window Frame · damaged · Oct 16, 2024 · N21723 · Boeing 737724 · Fuselage Main, Structure
  > 737NG -LH SIDE NUMBER 3 WINDOW FRAME POST - PERMANENT REPAIR. - REF STEP 37A OF EA, SINCE 2D EDGE MARGEN COULD NOT BE MAINTAIND EXTEND FRAME CUT PER AVO 723-24-10-11-01 REV A PERFORMED HFEC INSPECTION OF TRIM OUT EDGES IAW 737 NDT MANUAL PART 6, 51-00-00 PROCE
- [SDR CALA2024072400280](https://openairdocs.org/sdr/CALA2024072400280.md): Panel · missing · Jul 24, 2024 · N21723 · Boeing 737724 · Fuselage Structure (General)
  > PDA 1 RAMP FOUND AIRCRAFT ARRIVED WITH MISSING PANEL. PANEL IS NUMBER 194E. AIRCRAFT ARRIVED FROM RDU FLIGHT NUMBER 1878 ON 7-21-24. NO FURTHER DAMAGE ON AIRCRAFT FROM PANEL DEPARTING AIRCRAFT WAS FOUND. ACCOMPLISHED CONDITIONAL INSPECTION FOR WHEN PARTS DEPA
- [SDR CALA2024050801394](https://openairdocs.org/sdr/CALA2024050801394.md): Shear Tie · corroded · May 7, 2024 · N21723 · Boeing 737724 · Fuselage Internal Mounting Structure
  > SUPPORT TASK AFT CARGO COMPARTMENT SHEAR TIE CORRODED AT STA 747 AND BETWEEN STR26L-STR27L. REF TO PEMCO NR 15069.0467 REMOVED AND REPLACED AFT CARGO SHEAR-TIE AT STA 747 BETWEEN STR 26L- STR 27L IAW B737 SRM 51-40-02. WORK PERFORMED BY P134 ENTERED BY V927860
- [SDR CALA2024050801393](https://openairdocs.org/sdr/CALA2024050801393.md): Shear Tie · corroded · May 7, 2024 · N21723 · Boeing 737724 · Fuselage Internal Mounting Structure
  > SUPPORT TASK AFT CARGO COMPARTMENT, SHEAR TIE CORRODED AT STA 807 AND BETWEEN STR 26L AND STR 27L. REF TO PEMCO NR 15069.0474 REMOVED AND REPLACED AFT CARGO SHEAR-TIE AT STA 807 BETWEEN STR 26L AND STR 27L IAW B737 SRM 51-40-02. WORK PERFORMED BY P134, ENTERED
- [SDR CALA2024050801392](https://openairdocs.org/sdr/CALA2024050801392.md): Shear Tie · corroded · May 7, 2024 · N21723 · Boeing 737724 · Fuselage Internal Mounting Structure
  > SUPPORT TASK AFT CARGO COMPARTMENT, SHEAR TIE CORRODED AT STA 847 BETWEEN STR 26L AND STR 27L. REMOVED AND REPLACED AFT CARGO SHEAR-TIE AT STA 847 BETWEEN STR 26L AND STR 27L IAW B737 SRM 51-40-02.
- [SDR CALA2024050201299](https://openairdocs.org/sdr/CALA2024050201299.md): Stringer · corroded · Apr 26, 2024 · N21723 · Boeing 737724 · Fuselage Miscellaneous Structure
  > SUPPORT TASK AFT CARGO COMPARTMENT STR 27L,SPLICE CORRODED AT STA 887. REF TO PEMCO NR 15069.0413 REMOVED AND REPLACED NEW SPLICE STA 887 STR 27L AFT CARGO IAW B737-700 SRM 51-40-02. REMOVED AND REPLACED NEW SPLICE STA 887 STR 27L AFT CARGO IAW B737-700 SRM 5
- [SDR CALA2024050201300](https://openairdocs.org/sdr/CALA2024050201300.md): Stringer · damaged · Apr 22, 2024 · N21723 · Boeing 737724 · Fuselage Main, Longeron/Stringer
  > EXTERIAL FUSELAGE SKIN HAS 2EA POPPING RIVET HEADS AND BULGING BETWEEN FASTENERS STA 1080-1088 AND STR 22L JUST AFT OF TOILET SERVICE DOOR. REF TO PEMCO NR 15069.0401 (B737-53-3-0742)
- [SDR CALA2024050301304](https://openairdocs.org/sdr/CALA2024050301304.md): Bearing · cracked · Apr 7, 2024 · N21723 · Boeing 737724 · Horizontal Stabilizer Structure
  > UPON REMOVAL OF RH HORIZ STAB CENTER HINGE PIN, FOUND RH CENTER HINGE FITTING BEARING CRACKED IN MULTIPLE LOCATIONS. REFER TO PEMCO NR. 15069.0775. REMOVED AND REPLACED TH STAB, CENTER HINGE FITTING, BEARING IAW B737 CMM 55-10-06.
- [SDR CALA2024050301303](https://openairdocs.org/sdr/CALA2024050301303.md): Bearing · cracked · Apr 7, 2024 · N21723 · Boeing 737724 · Horizontal Stabilizer Structure
  > UPON REMOVAL OF LH CENTER HINGE PIN, FOUND LH CENTER HINGE FITTING BEARING CRACKED. REFER TO PEMCO NR. 15069.0777. REMOVED AND REPLACED LH STAB, CENTER HINGE FITTING BEARING IAW B 737 CMM 55-10-06. WORK PERFORMED BY V927956, ENTERED BY V927860 AND CMM 55-10-07
- [SDR CALA2023112903498](https://openairdocs.org/sdr/CALA2023112903498.md): Rod · broken · Nov 28, 2023 · N21723 · Boeing 737724 · Landing Gear Door Retract Section
  > LOUD NOSE GEAR NOISE DURING RETRACTION ON DEPARTURE. EXCESSIVE NOISE WITH GEAR UP. FOUND RIGHT NLG DOOR LINKAGE SEPARATED. PICS ADDED PICS ADDED R+R NLG WHEEL WELL DOOR LINKAGE IRW AMM 32-33-61. PERFORMED ADJUSTMENT OF NLG WHEEL WELL DOOR LINKAGE IRW AMM 32-
- [SDR CALA2023112403457](https://openairdocs.org/sdr/CALA2023112403457.md): Transmitter · inoperative · Nov 23, 2023 · N21723 · Boeing 737724 · Hydraulic Quantity Sensor
  > HYD SYSTEM "A" QTY DROPPING INFLIGHT--CREW STATED 71 PERCENT AND DROPPING - AIR RETURN TO IAH PERFORMED DEU 1&2 BITE CHK PER AMM 31-62-21-860-003. DEU1&2 PASSED TEST. TRANSMITTER, HY OFF 29-2909-9-9001 1625 ON 29-2909-9-9001 5456 TRANSMITTER, HY OFF 29-2909-9-
- [SDR CALA2023080902464](https://openairdocs.org/sdr/CALA2023080902464.md): Regulator · inoperative · Aug 5, 2023 · N21723 · Boeing 737724 · Cabin Pressure Control System
  > CABIN ALT WARNING AT FL 400 W/ CABIN ALT 10K+ INDICATIONS SHOWED HIGH PRESS DIFF W/ HIGH CABIN. UPDATED MAA CODE FIX USING VENDOR MAA SCREEN. PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. MAC METER INITIATED FOR WITH VENDOR ID V915727 MAC RELATED WORK ORDER
- [SDR CALA2023050801406](https://openairdocs.org/sdr/CALA2023050801406.md): Landing Gear · warning message · May 8, 2023 · N21723 · Boeing 737724 · Landing Gear System
  > ON FINAL APP WHEN GEAR AND FLAPS 15 MOMENTRY GEAR HORN AND GEAR USAFE LONGER THAN NORM COMPLETED MAIN LANDING GEAR OPERATIONAL TEST PER AMM 32-09-10-740-801. NO FAULTED NOTED AT THIS TIME OK TO CONTINUE. 32-32-00-710-801. GEAR OPERATES NORMALLY. ACCOMPLISHED L
- [SDR CALA2023041901178](https://openairdocs.org/sdr/CALA2023041901178.md): Diffuser · unknown · Apr 19, 2023 · N21723 · Boeing 737 · Air Conditioning System
  > LFT PACK TRIP OFF ILLUMINATED L/H PACK SECONDARY HEAT EXCHANGER PLENUM CHECK VALVE MISSING PARTS UPDATE UPDATE PHOTO R/R LH PLENUM AND DIFFUSER IAW AMM 21-51-03 OPS/LEAK CHECK GOOD ATTHIS TIME.PARTS USED: 29-2151-3-0078,QTY:1 29-2151-3-0064,QTY:1
- [SDR CALA2022062701591](https://openairdocs.org/sdr/CALA2022062701591.md): Screw · missing · Jun 27, 2022 · N21723 · Boeing 737724 · Nacelle/Pylon, Plate/Skin
  > PDA 3 SCREW MISSING FROM #2 ENGINE PANEL 411 BL LOG NOTED
- [SDR CALA2022032500787](https://openairdocs.org/sdr/CALA2022032500787.md): Service Panel · missing · Mar 25, 2022 · N21723 · Boeing 737* · Doors
  > PDA 2 LAV SERVICE PANEL MISSING ON ARRIVAL. PLACED ON MEL PLACED ON MEL INREFERENCE TO GMM 02-30-95 APPROVED UPDATE, ADDING PICTURE AND SETTING SDR TO YES FOR PDA
- [SDR CALA2022031400661](https://openairdocs.org/sdr/CALA2022031400661.md): None · inoperative · Mar 14, 2022 · N21723 · Boeing 737 · Water and Waste System
  > TOILET FLUSH SYSTEM DOES NOT FLUSH ALL TOILETS PERFORMED OPS TEST OF ALL TOILETS PER AMM 38-32-00-700-802. OPS TEST GOOD. ALL TOILETS FLUSHED NORMALLY MULTIPLE TIMES.
- [SDR CALA2021112302162](https://openairdocs.org/sdr/CALA2021112302162.md): None · none · Nov 22, 2021 · N21723 · Boeing 737724 · Cabin Equipment/Furnishings
  > PDA 1 A SET OF CHOCKS DEPARTED THE AIRCRAFT DURING DEPARTURE OUT OF EWR FLT2077 ON 11/22/2021. WE ARE NOT SURE WHERE EXACTLY THE CHOCKS WERE LOCATED BEFORE THEY DEPARTED. SUBSEQUENT INSPECTION OF THE AIRCRAFT REVEALED NO DAMAGES. PERFORMED EXTERIOR INSPECTION
- [SDR CALA2021111702125](https://openairdocs.org/sdr/CALA2021111702125.md): Slide · deployed · Nov 17, 2021 · N21723 · Boeing 737724 · Life Raft
  > DOOR 1R PARTIALLY DEPLOYED SLIDE DEPLOYED SLIDE-NOT INFLATED/FEL L OUT CASE LOCKING FOR MX FERRY UNLOCKED TO CREATE MAA FOR STT ON CALL MX LOCKED BY TOMC UPDATED MAA CODE FIX USING VENDOR MAA SCREEN UPDATED MAA CODE FIX USING VENDOR MAA SCREEN UPDATED MAA CODE
- [SDR CALA2021041400449](https://openairdocs.org/sdr/CALA2021041400449.md): Light · broken · Apr 12, 2021 · N21723 · Boeing 737724 · Emergency Lighting
  > SEAT ROW 11 ABC EMERGENCY LIGHT INOP.
- [SDR CALA2021040600437](https://openairdocs.org/sdr/CALA2021040600437.md): Shear Plate · cracked · Apr 6, 2021 · N21723 · Boeing 737724 · Fuselage Miscellaneous Structure
  > B737-57-4-1262 SHEAR FITTING AT STA540 RBL15.04 IS CRACKED. SP T 6205861 REMOVED AND REPLACED SHEAR FITTING AT STA 540 RBL 15.04IAW B737- 700 SRM 51-40-02. SSFR REPORT, FORM 46-0024, ENTERED BY UAL INSP ECTION U354651, 4/3/21 COMPLETED INSPECTION
- [SDR CALA2021040500419](https://openairdocs.org/sdr/CALA2021040500419.md): Fitting · cracked · Apr 3, 2021 · N21723 · Boeing 737724 · Fuselage Miscellaneous Structure
  > B737-57-4-1262 SHEAR FITTING AT STA 540 LBL 15.04 IS CRACKED. REMOVED AND REPLACED SHEAR FITTING AT STA 540 LBL 15.04 IAW B737 -700 SRM 51-40-02 AND EC/RA 5714-01206 REV ORIGINAL.
- [SDR CALA2021040500418](https://openairdocs.org/sdr/CALA2021040500418.md): Fitting · cracked · Apr 3, 2021 · N21723 · Boeing 737724 · Fuselage Miscellaneous Structure
  > B737-57-4-1262 SHEAR FITTING AT STA 540 RBL 15.04 IS CRACKED. SP T 6205861. LOG PAGE OPEN. MORE DETAILS AWAITED.
- [SDR CALA2021040500417](https://openairdocs.org/sdr/CALA2021040500417.md): Fitting · cracked · Apr 3, 2021 · N21723 · Boeing 737724 · Fuselage Miscellaneous Structure
  > B737-57-4-1262 SHEAR FITTING AT STA 540 RBL 6.14 IS CRACKED. REMOVED AND REPLACED SHEAR FITTING AT STA 540 RBL 6.14 IAW B737- 700 SRM 51-40-02 AND EC/RA 5714-01206 REV ORIGINAL FORM 4 4-0008.
- [SDR CALA2018050201219](https://openairdocs.org/sdr/CALA2018050201219.md): Floorbeam · corroded · May 1, 2018 · N21723 · Boeing 737724 · Fuselage Main, Floor Beam
  > MAIN CABIN FLOORBEAM HAS CORROSION AT STA 312 LBL-12. BLENDED OUT DAMAGE AND INSTALLED REPAIR STRAP PER ECRA 5315- 01097 REV A.
- [SDR CALA2018050201218](https://openairdocs.org/sdr/CALA2018050201218.md): Floorbeam · corroded · May 1, 2018 · N21723 · Boeing 737724 · Fuselage Main, Floor Beam
  > MAIN CABIN FLOORBEAM HAS CORROSION AT STA 328 RBL 25. SPLICED IN NEW SECTION OF FLOORBEAM UPPER CHORD FROM RBL 1 TO RBL 41 PER ECRA 5315-01098.
- [SDR CALA2018043001199](https://openairdocs.org/sdr/CALA2018043001199.md): Frame · cracked · Apr 29, 2018 · N21723 · Boeing 737724 · Fuselage Main, Frame
  > LEFT BS 727 LOWER FRAME WEB CRACKED AT FASTENER HOLE, 3 O'CLOCK AND 9 O'CLOCK POSITION. CRACK EXTENDS O/B 0.300" FROM FASTENER HOLE AND I/B FROM FASTENER HOLE THROUGH RADIUS AND INTO INBD FLANGE. CUT OUT THE CRACKS AND INSTALLED A REPAIR IAW EA 5310-08135, RE
- [SDR CALA2018043001212](https://openairdocs.org/sdr/CALA2018043001212.md): Floorbeam · corroded · Apr 25, 2018 · N21723 · Boeing 737724 · Fuselage Main, Floor Beam
  > CABIN FLOORBEAM BS 986, RBL 29 TO RBL 44 CORRODED. REPAIRED THE FLOORBEAM TEE IAW SRM 53-70-51, REPAIR 4, ALTERNATIVE 1.
- [SDR CALA2017122404583](https://openairdocs.org/sdr/CALA2017122404583.md): Power Supply · inoperative · Dec 24, 2017 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY LIGHTS IN BULL NOSE AT ROWS 23ABC, 22DEF, & 12DEF INOPERATIVE. FOUND A LOOSE CONNECTOR AT BS 706. SECURED AND OPS CHECKED OK ON SEAT ROW 23 ABC REF AMM 33-51-11. REPLACED THE POWER SUPPLY, OPS CHECKED OK IAW AMM 33-51-06
- [SDR CALA2017121604471](https://openairdocs.org/sdr/CALA2017121604471.md): Oven · sparks · Dec 16, 2017 · N21723 · Boeing 737724 · Buffet/Galleys
  > OVEN SMOKING OR SPARKING 205 REMOVED OVEN CONTENTS. FOUND RESIDUAL FROM PREVIOUS FLT. CLEANED AND OPS CHK''D OVEN. OK TO CONTINUE. OPS CHKS NORMAL.
- [SDR CALA2017050501280](https://openairdocs.org/sdr/CALA2017050501280.md): Light · inoperative · May 5, 2017 · N21723 · Boeing 737724 · Emergency Lighting
  > L1 DOOR EXTERIOR EMERGENCY LIGHT INOP. RELAMP PER AMM 33-51-04-960-801. CK NORMAL.
- [SDR CALA2017042201109](https://openairdocs.org/sdr/CALA2017042201109.md): Battery Pack · discharged · Apr 22, 2017 · N21723 · Boeing 737724 · Emergency Lighting
  > DURING INTERIOR INSP OF ACFT DISCOVERED EMERGENCY LIGHTS AT ROWS 3 - 11 ABC ON SIDE OF SEATS ARE INOP. REPLACED BATTERY PACK & POWER SUPPLY PER AMM 33-51-06. OPS CK GOOD.
- [SDR CALA2017030400524](https://openairdocs.org/sdr/CALA2017030400524.md): Battery Pack · discharged · Mar 4, 2017 · N21723 · Boeing 737724 · Emergency Lighting
  > SEAT 4ABC TO 11ABC EMERGENCY LIGHT WOULD NOT TEST. CHARGED THE BATTERY PACKS. OPS CHECKED NORMAL.
- [SDR CALA2017021700382](https://openairdocs.org/sdr/CALA2017021700382.md): Power Supply · no test · Feb 17, 2017 · N21723 · Boeing 737724 · Emergency Lighting
  > BULL NOSE EMERGENCY LIGHTS FROM SEAT ROWS 23-32, LIGHTS REMAINS ON FOR LESS THAN 15 MINUTES AFTER FULL CHARGE, FAILS BATTERY PACK CAPACITY CHECK. R & R THE POWER SUPPLY ASSY IAW AMM 33-51-06.
- [SDR CALA2016031100159](https://openairdocs.org/sdr/CALA2016031100159.md): Control Box · failed · Mar 10, 2016 · N21723 · Boeing 737724 · Fixed Inner Doors
  > FLIGHT DECK DOOR FAILED TO REMAIN LOCKED IN FLIGHT. FOUND ELEC CONTROL BOX FAILED. REPLACED THE SAME IAW TASK 52-52- 02-800-801C12. OPERATIONS CHECKED NORMAL.
- [SDR CALA2016020100077](https://openairdocs.org/sdr/CALA2016020100077.md): Door Frame · cracked · Jan 28, 2016 · N21723 · Boeing 737724 · Service Doors
  > R1 DOOR FRAME BELOW THE BOX HANDLE MECHANISM, BOLT ATTACHMENT HOLE, JUST AFT OF DOOR TORQUE TUBE HAS A CRACK ALTER ACFT NOSE. R & R BEAM IAW SRM 51-40-02 & DWGS 141A6535 & 141A6516.
- [SDR CALA2014091101222](https://openairdocs.org/sdr/CALA2014091101222.md): Circuit Breaker · popped · Sep 11, 2014 · N21723 · Boeing 737724 · Landing Gear Position and Warning
  > ON APPROACH, UPON BRINGING LG LEVER DOWN WE DID NOT GET MAIN GEAR DOWN INDICATION, ALL 3 LIGHTS INOPERATIVE. ALTERNATE LG INDICATORS SHOWED 3 GREEN. UPON INSPECTION OF CB PANEL FOUND SECT 5 CB POPPED. RESET CB GOT 3 MAIN GREEN LIGHTS. CB SECT 5 P 6 - 3 F-1
- [SDR CALA2013081200554](https://openairdocs.org/sdr/CALA2013081200554.md): Charger · inoperative · Aug 10, 2013 · N21723 · Boeing 737724 · Emergency Lighting
  > EMERGENCY LIGHT INOPERATIVE FROM ROW 22 AFT. R & R BATTERY AND CHARGER. OPS CHECKED GOOD.

Next page: https://openairdocs.org/aircraft/N21723/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 = 'N21723' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N21723/reports

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