# N277WN: 2007 Boeing 737-7H4

- Status: Valid registration
- Airframe: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (registry code 1384404, 143 seats)
- Engine: [CFM International CFM56-7B24 series](https://openairdocs.org/engine/cfm-international-cfm56-7b24-series) (registry code 13044)
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE) (The Boeing Company) (OpenAirDocs)
- Serial number: 32531
- Year built: 2007
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: May 21, 2007
- Certificate issued: June 19, 2007
- Expires: August 31, 2027
- Mode S code: A2C27E
- Registered owner: [Southwest Airlines Co](https://openairdocs.org/faa-owner/SOUTHWEST%20AIRLINES%20CO)
- Location: [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas)
- Owner type: Corporation
- Owner's area on the map: 32.8326° N, 96.8491° W: Placed by OpenAirDocs at the center of ZIP code 75235, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=277WN
- Page: https://openairdocs.org/aircraft/N277WN

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every CFM International CFM56-7B24 model are included.

## ADs that may apply (OpenAirDocs): 19 in force

### Matched by airframe (Boeing 737-7H4)

None in force.

### Matched by engine (CFM International CFM56-7B24 series)

- [AD 2023-05-05](https://openairdocs.org/ad/2023-05-05): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 98 more. Effective May 10, 2023
- [AD 2022-02-03](https://openairdocs.org/ad/2022-02-03): Turbine Engine Accessory Drive · CFM International CFM56-3, CFM56-3B, CFM56-3C and 34 more. Effective Mar 22, 2022
- [AD 2021-16-08](https://openairdocs.org/ad/2021-16-08): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 55 more. Effective Sep 28, 2021
- [AD 2018-26-01](https://openairdocs.org/ad/2018-26-01): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jan 10, 2019
- [AD 2018-09-51](https://openairdocs.org/ad/2018-09-51): Engine · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 7, 2018
- [AD 2015-18-04](https://openairdocs.org/ad/2015-18-04): 73-tooth gearshaft located in the engine accessory gearbox (AGB) · CFM International CFM56-3, CFM56-7B20, CFM56-7B20/2 and 47 more. Effective Oct 20, 2015
- [AD 2015-04-02](https://openairdocs.org/ad/2015-04-02): Dual engine thrust instability event · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Mar 31, 2015
- [AD 2010-13-09](https://openairdocs.org/ad/2010-13-09): Stage 3 low-pressure turbine (LPT) · CFM International CFM56-5, CFM56-5-A1/F, CFM56-5A4 and 88 more. Effective Jul 26, 2010
- [AD 2010-01-05](https://openairdocs.org/ad/2010-01-05): LP turbine rear frames · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 25 more. Effective Feb 18, 2010
- [AD 2009-11-02](https://openairdocs.org/ad/2009-11-02): HPC 4-9 spools · CFM International CFM56-2, CFM56-2A, CFM56-2B and 109 more. Effective Jun 23, 2009
- [AD 2008-03-09](https://openairdocs.org/ad/2008-03-09): Low pressure turbine rear frames (TRFs) · CFM International CFM56-7B18, CFM56-7B20, CFM56-7B22 and 10 more. Effective Mar 10, 2008
- [AD 2006-26-01](https://openairdocs.org/ad/2006-26-01): Fuel filters · CFM International CFM56-2, CFM56-2A, CFM56-2B and 93 more. Effective Jan 3, 2007
- [AD 2002-16-18](https://openairdocs.org/ad/2002-16-18): Low pressure turbine (LPT) nozzle segments · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 33 more. Effective Sep 18, 2002
- [AD 2002-13-03](https://openairdocs.org/ad/2002-13-03): Turbofan Engines · CFM International CFM56-2, CFM56-2A, CFM56-2B and 55 more. Effective Aug 1, 2002
- [AD 2001-11-05](https://openairdocs.org/ad/2001-11-05): No. 4 Bearings · CFM International CFM56-2, CFM56-2B, CFM56-3 and 45 more. Effective Jun 11, 2001
- [AD 2001-02-12](https://openairdocs.org/ad/2001-02-12): On-Wing Torque Inspection · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 11 more. Effective Feb 14, 2001
- [AD 98-21-23](https://openairdocs.org/ad/98-21-23): Electronic Engine Control · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 10 more. Effective Nov 2, 1998
- [AD 98-19-20](https://openairdocs.org/ad/98-19-20): Hydromechanical Unit · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 7 more. Effective Oct 7, 1998
- [AD 98-14-51](https://openairdocs.org/ad/98-14-51): Accessory Gearbox · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 10 more. Effective Oct 1, 1998

### Historical (superseded or no longer in force)

- [AD 2021-10-09](https://openairdocs.org/ad/2021-10-09) (historical): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 82 more. Effective Jun 24, 2021
- [AD 2019-12-05](https://openairdocs.org/ad/2019-12-05) (historical): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 39 more. Effective Jul 5, 2019
- [AD 2018-18-01](https://openairdocs.org/ad/2018-18-01) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Oct 16, 2018
- [AD 2018-10-11](https://openairdocs.org/ad/2018-10-11) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 1, 2018
- [AD 2018-09-10](https://openairdocs.org/ad/2018-09-10) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective May 14, 2018
- [AD 2013-26-01](https://openairdocs.org/ad/2013-26-01) (historical): Oil dynamic seal assembly · CFM International CFM56-3, CFM56-3B, CFM56-3C and 52 more. Effective Feb 3, 2014
- [AD 2000-12-01](https://openairdocs.org/ad/2000-12-01) (historical): Critical Life-Limited Parts · CFM International CFM56-2, CFM56-2A, CFM56-2B and 54 more. Effective Dec 11, 2000

## Information bulletins (advisory) (1 in force)

- [SAIB NE-08-17R3](https://openairdocs.org/saib/NE-08-17R3): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued May 28, 2014
- [SAIB NE-08-17R2](https://openairdocs.org/saib/NE-08-17R2) (historical): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued Mar 7, 2011
- [SAIB NE-08-17R1](https://openairdocs.org/saib/NE-08-17R1) (historical): Propulsion Technology LLC Unapproved Repair. Issued May 22, 2008
- [SAIB NE-08-17](https://openairdocs.org/saib/NE-08-17) (historical): Propulsion Technologies International Unapproved Repair. Issued May 14, 2008

## NTSB investigations

None matched to N277WN.

## FAA accident and incident reports

None matched to N277WN.

## Service difficulty reports (325, newest 50)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR SWAA2026091609662](https://openairdocs.org/sdr/SWAA2026091609662), Sep 12, 2026: FLOOR PANEL. CRACKED. AFT CARGO FLOOR CRACKED PATCHED AFT CARGO FLOOR CRACK REF AMM 25-52-01
- [SDR SWAA2026082880719](https://openairdocs.org/sdr/SWAA2026082880719), Aug 24, 2026: LANDING GEAR. MALFUNCTIONED. WHILE MOVING THE LANDING GEAR HANDLE FROM UP TO OFF, THE GEAR INADVERTENTLY EXTENDED. RETRACTED LANDING GEAR AT 245 KTS WHILE MOVING THE LANDING GEAR HANDLE FRO
- [SDR SWAA2026081229979](https://openairdocs.org/sdr/SWAA2026081229979), Aug 8, 2026: HANDLE. LOOSE. FWD ENTRY DOOR CABIN SIDE AFT DOOR ASSIST HANDLE LOOSE. SECURED FWD ENTRY DOOR AFT SIDE ASSIST HANDLE IAW AMM 52-11-31. CONFIRMED FWD ENTRY DOOR AFT DOOR ASSIST
- [SDR SWAA2026073070458](https://openairdocs.org/sdr/SWAA2026073070458), Jul 26, 2026: BULB. INOPERATIVE. AFT LAV EMERGENCY LIGHT BULB OUT RELAMPED AFT LAV AUXILIARY LIGHT IAW AMM 25-42-60. EMERGENCY LIGHTS OPS CHECK GOOD IAW AMM 33-51-00.
- [SDR SWAA2026030274512](https://openairdocs.org/sdr/SWAA2026030274512), Feb 26, 2026: COWL DOOR. PULLED. NR 2 ENG INLET COWL HAS TWO PULLED THRU FASTENERS AND ONE MISSING FASTENER ON AFT BULKHEAD AT 3 O`CLOCK POSITION VIEWING AFT FACING FWD. R & R THE NR 2 ENGINE I
- [SDR SWAA2025081804817](https://openairdocs.org/sdr/SWAA2025081804817), Aug 15, 2025: LENS. LOOSE. EXTERIOR EMERGENCY EXIT LIGHT LENS AT L1 DOOR APPEARS LOOSE. SECURED LIGHT ASSEMBLY PER AMM 33-51-04.
- [SDR SWAA2025060577224](https://openairdocs.org/sdr/SWAA2025060577224), Jun 2, 2025: LIGHT. INOPERATIVE. EMERGENCY EXIT LIGHT BY L1 DOOR INOP <[01]. RELAMPED L1 OUTSIDE EMERGENCY LIGHT IAW AMM 33-51-04.
- [SDR SWAA2025041423361](https://openairdocs.org/sdr/SWAA2025041423361), Apr 9, 2025: HANDLE. OUT OF ADJUST. 2L DOOR HANDLE HAS MORE PLAY THAN OTHER DOORS WHEN CLOSED<[01] INSPECTED ATTACH HARDWARE ON AFT L2 DOOR FOR PROPER INSTALLATION AND SECURITY. PERFORMED DOOR ENT
- [SDR SWAA2024121674393](https://openairdocs.org/sdr/SWAA2024121674393), Dec 5, 2024: SIGN. LOOSE. FWD ENTRY DOOR (L-1) EMERGENCY EXIT SIDEWALL LENS FELL OFF<[01] REMOVED & REPLACED SIDEWALL EXIT SIGN ASSAY. IAW M/M 33-51-06 & 33-51-14
- [SDR SWAA2024121673745](https://openairdocs.org/sdr/SWAA2024121673745), Dec 4, 2024: BATTERY. INOPERATIVE. EMERGENCY EXIT LIGHTS ASSOCIATED WITH BATTERY PACK M1672 INOP EMERGENCY EXIT LIGHTS ASSOCIATED WITH BATTERY PACK M1672 INOP.<[01] REPLACED AND TESTED M1672 EMER
- [SDR SWAA2024121673747](https://openairdocs.org/sdr/SWAA2024121673747), Dec 4, 2024: LIGHT. INOPERATIVE. EMERGENCY EXIT SLIDE LIGHT OUTSIDE OF FORWARD SERVICE DOOR INOP<[01] CLEANED TERMINAL LUGS AT EMERGENCY EXIT SLIDE LIGHT OUTSIDE OF FWD SERVICE DOOR. PERFORMED 
- [SDR SWAA2024121673748](https://openairdocs.org/sdr/SWAA2024121673748), Dec 4, 2024: LIGHT. INOPERATIVE. EMERGENCY EXIT LOCATOR SIGN FOR FWD ENTRY DOOR INOP<[01] REPLACED EMERGENCY EXIT LOCATOR LIGHT ASSEMBLY ON FWD LAV PER AMM 33-51-14-960-802. TERMINATED WIRE W41
- [SDR SWAA2024121673749](https://openairdocs.org/sdr/SWAA2024121673749), Dec 4, 2024: LIGHT. INOPERATIVE. EMERGENCY EXIT L/H AND R/H GROUND ILLUMINATION SLIDE LIGHTS INOP COMMON TO M1670 BATTERY PACK SEE WDM 33-51-13<[01] RELAMPED AND PERFORMED GOOD INSTALLATION TES
- [SDR SWAA2024121673300](https://openairdocs.org/sdr/SWAA2024121673300), Dec 2, 2024: SCUFF PLATE. CRACKED. ACB FWD CORNER SCUFF PLATE IS CRACKED<[01] REPAIRED AND INSTALLED ACB FWD CORNER SCUFF PLATE PER SRM 53-60-15-2R-1;AND JOB CARD TTG8Q00WWT6Z.;[02] REJECTION; IN
- [SDR SWAA2024121673301](https://openairdocs.org/sdr/SWAA2024121673301), Dec 2, 2024: SCUFF PLATE. CRACKED. ACB AFT CORNER SCUFF PLATE IS CRACKED<[01] REPLACED AND INSTALLED ACB AFT CORNER SCUFF PLATE PER SRM 51-10-02; AND JOB CARD TTG8Q00WWT6Z;[02] REJECTION; INCORRE
- [SDR SWAA2024121670986](https://openairdocs.org/sdr/SWAA2024121670986), Nov 23, 2024: INTERCOSTAL. CRACKED. ACB; DURIN OK TO INSTALL WAS FOUND A CRACK ON INTERCOSTAL BS 947 RBL 25 BETWEEN S23R AND S24R.<[01] REMOVED AND REPLACED INTERCOSTAL BS927 TO BS947 RBL25 WL 164
- [SDR SWAA2024121670325](https://openairdocs.org/sdr/SWAA2024121670325), Nov 21, 2024: FLOORBEAM. CORRODED. CORROSION ON BEAM ASSY LOWER PANEL MIDSPAN FIXED T.E. ORSS 452; 455; 459; 466.5; 471.5; 473.5; 475.5; 477.5 (MARKED)<[01] REMOVED AND REPLACED BEAM ASSY LOWER P
- [SDR SWAA2024121669918](https://openairdocs.org/sdr/SWAA2024121669918), Nov 20, 2024: VAPOR BARRIER. CRACKED. L/H B.S. 663 VAPOR BARRIER IS CRACKED AT 4' I/B OF THE O/B EDGE<[01] L/H B.S. 663 VAPOR BARRIER; CRACK AT 4' I/B OF THE O/B EDGE; WAS REPAIRED IAW SRM 51-70-04-
- [SDR SWAA2024121661353](https://openairdocs.org/sdr/SWAA2024121661353), Nov 18, 2024: FITTING. CRACKED. ACB WATER TANK ENCLOSURE FRAME ATTACH FITTING CRACKED AT BS947 LBL 9 WL156<[01] REMOVED AND INSTALLED NEW ACB WATER TANK ENCLOSURE FRAME ATTACH FITTING AT BS947
- [SDR SWAA2024121660496](https://openairdocs.org/sdr/SWAA2024121660496), Nov 15, 2024: INTERCOSTAL. CORRODED. CORROSION ON INTERCOSTAL RBL21 BS500A TO BS500B WL 156 (MARKED).<[01] THE DISCREPANCY AREA WAS MANUALLY CLEANED WITH SOLVENT AND ABRASIVE PAD AND FOUND BARE MET
- [SDR SWAA2024121060497](https://openairdocs.org/sdr/SWAA2024121060497), Nov 15, 2024: BAFFLE. CORRODED. CORROSION ON INTERCOSTAL RBL21 BS500B TO BS500C WL 156 (MARKED).<[01] REMOVED AND REPLACED AT FCB BAFFLE ASSY (INTERCOSTAL) BETWEEN BS.500B - BS.500C RBL.21 WL.
- [SDR SWAA2024121660092](https://openairdocs.org/sdr/SWAA2024121660092), Nov 14, 2024: SIDEWALL SUPPORT. CORRODED. CORROSION ON FLOOR TO SIDEWALL SUPPORT AT ACB BS727 - BS767 RBL21 WL157.<[01] REMOVED AND REPLACED FLOOR TO SIDEWALL SUPPORT FROM BS727 TO BS767;RBL21 WL157;IAW
- [SDR SWAA2024121660097](https://openairdocs.org/sdr/SWAA2024121660097), Nov 14, 2024: SIDEWALL SUPPORT. CORRODED. CORROSION ON FLOOR TO SIDEWALL SUPPORT AT ACB BS727 - BS847 LBL21 WL157.<[01] REMOVED AND REPLACED FLOOR TO SIDEWALL SUPPORT AT ACB BS727 - BS847 LBL21 WL157 IA
- [SDR SWAA2024121660106](https://openairdocs.org/sdr/SWAA2024121660106), Nov 14, 2024: INTERCOSTAL. CORRODED. CORROSION ON INTERCOSTAL AT ACB BS773 RBL20 WL157.<[01] UPDATED MEASUREMENTS;[02] REMOVED AND REPLACED THE WEB (INTERCOSTAL) AT ACB BETWEEN BS.767 - BS.787 RBL.
- [SDR SWAA2024121660113](https://openairdocs.org/sdr/SWAA2024121660113), Nov 14, 2024: FLOOR PANEL. DELAMINATED. PASSENGER CABIN FLOOR PANEL 241UF HAS UPPER SURFACE DELAMINATION<[01] FABRICATION OF NEW 241UF FLOOR PANEL REPLACEMENT HAS BEEN ACCOMPLISHED PER [SRM 53-00-50-2
- [SDR SWAA2024121660107](https://openairdocs.org/sdr/SWAA2024121660107), Nov 14, 2024: TRACK. CRACKED. CRACKED TRACK AT ACB BS767 RBL13 WL157<[01] REMOVED AND REPLACED ACB TRACK ON CUSTOMER CARD NO TTG8Q00X2G0N
- [SDR SWAA2024121660093](https://openairdocs.org/sdr/SWAA2024121660093), Nov 14, 2024: SUPPORT ANGLE. CRACKED. CRACKED SUPPORT ANGLE AT ACB BEHIND WATER SERVICE PANEL BS918 RBL12 WL172. MARKED<[01] REMOVED AND REPLACED THE STIFFENER AT ACB BEHIND WATER SERVICE PANEL BS91
- [SDR SWAA2024121660101](https://openairdocs.org/sdr/SWAA2024121660101), Nov 14, 2024: TRACK. CORRODED. CORROSION ON TRACK TIEDOWNS AT ACB RBL13 BS867; BS727B WL157.<[01] REMOVED AND REPLACED ACB TRACK ON CUSTOMER CARD NO. TTG8Q00X2G0N;[02] VERIFIED CORRECTIVE ACT
- [SDR SWAA2024121660096](https://openairdocs.org/sdr/SWAA2024121660096), Nov 14, 2024: RAIL. CORRODED. CORROSION ON RAIL AT ACB BS767+6 LBL3 WL157. MARKED<[01] REPAIRED RAIL WITH (1EA.) REINFORCING CHANNEL ON UPPER FLANGE AT JOGGLE LOCATION FROM ACB BS.767+6' LBL
- [SDR SWAA2024121060099](https://openairdocs.org/sdr/SWAA2024121060099), Nov 14, 2024: ANGLE. CORRODED. CORROSION ON AFT BULKHEAD TO FLOOR SUPPORT ANGLE AT ACB BS947 LBL8 TO RBL16 WL179. MARKED<[01] REMOVED AND INSTALLED NEW BULKHEAD SUPPORT ANGLE ACB BS947 BETWEE
- [SDR SWAA2024121060108](https://openairdocs.org/sdr/SWAA2024121060108), Nov 14, 2024: TRACK. CRACKED. CRACKED TRACK AT ACB BS727E RBL13 WL157<[01] REMOVED AND REPLACED ACB FLOOR TRACK FROM BS-727 TO BS-887; RBL 13 WL 157.IAW SRM 51-40-02-0G-0 AND DWG 146A7500 RE
- [SDR SWAA2024121074920](https://openairdocs.org/sdr/SWAA2024121074920), Nov 14, 2024: RAIL. CORRODED. CORROSION ON RAIL AT ACB BS727D+6 RBL13 WL157.<[01] REMOVED AND REPLACED ACB TRACK ON CUSTOMER CARD NO. TTG8Q00X2G0N
- [SDR SWAA2024121659718](https://openairdocs.org/sdr/SWAA2024121659718), Nov 13, 2024: SCUFF PLATE. CRACKED. FWD CARGO FWD CORNER SCUFF PLATE IS CRACKED<[01] WELDED THE RADIUS OF THE FWD CARGO FWD CORNER SCUFF PLATE USING ER4043 FILLER ROD LOT NUMBER 1131216 PER SRM 53
- [SDR SWAA2024121659035](https://openairdocs.org/sdr/SWAA2024121659035), Nov 12, 2024: STRINGER. CORRODED. DURING OK TO CIC FOUND CORROSION ON BILGE AREA OF ELECTRICAL AND ELECTRONICS COMPARTMENT AT S-28R; BS 368 WL 148.8. (MARKED)<[01] REMOVED DAMAGE FOR CORROSION O
- [SDR SWAA2024121658797](https://openairdocs.org/sdr/SWAA2024121658797), Nov 11, 2024: SHIELD. CORRODED. ACB; FLOOR SHIELD HAS CORROSION AT BS 767+7; BS 767+11; RBL 25; WL 160.<[01] REMOVED AND REPLACED FWD SHIELD ON ACB BETWEEN BS 767 -BS 794.25 RBL.25 WL.160 IAW 
- [SDR SWAA2024121658799](https://openairdocs.org/sdr/SWAA2024121658799), Nov 11, 2024: SHIELD. CORRODED. ACB; FLOOR SHIELD HAS CORROSION AT BS 847+11; RBL 25; WL 160.<[01] REMOVED AND REPLACED AT ACB AFT SHIELD BETWEEN BS.847 - BS.867 RBL.25 WL.160 IAW B-737-700 SR
- [SDR SWAA2024121658778](https://openairdocs.org/sdr/SWAA2024121658778), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STR CLIP 4L IS CRACKED AT BS 727C.<[01] REMOVED AND REPLACED STRINGER CLIP P/N#143A1010-1 AT BS 727C STR 4L PER SRM 51-40-02-0G-0 AND PER DWG#146A1103
- [SDR SWAA2024121658785](https://openairdocs.org/sdr/SWAA2024121658785), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 4L IS CRACKED AT BS 727E.<[01] REMOVED AND EPLACED STRINGER CLIP 4L BS727E PER SRM 51-40-02; DWG#146A1112 REV:-. AND SRM 51-10-02 PARAGR
- [SDR SWAA2024121658779](https://openairdocs.org/sdr/SWAA2024121658779), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 5L IS CRACKED AT BS 727C.<[01] REMOVED AND REPLACED STRINGER CLIP P/N#143A1010-1 AT BS 727C STR 5L PER SRM 51-40-02-0G-0 AND PER DWG#146
- [SDR SWAA2024121658780](https://openairdocs.org/sdr/SWAA2024121658780), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 5R IS CRACKED AT BS 727A.<[01] REMOVED AND REPLACED STRINGER CLIP P/N#143A1010-1 AT BS 727A STR 5R PER SRM 51-40-02-0G-0 AND PER DWG#146
- [SDR SWAA2024121658781](https://openairdocs.org/sdr/SWAA2024121658781), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 5R IS CRACKED AT BS 727C.<[01] REMOVED AND REPLACED STRINGER CLIP P/N#143A1010-1 AT BS 727C STR 5R PER SRM 51-40-02-0G-0 AND PER DWG#146
- [SDR SWAA2024121658782](https://openairdocs.org/sdr/SWAA2024121658782), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 6R IS CRACKED AT BS 727C.<[01] REMOVED AND REPLACED STRINGER CLIP P/N#143A1010-1 AT BS 727C STR 6R PER SRM 51-40-02-0G-0 AND PER DWG#146
- [SDR SWAA2024121658783](https://openairdocs.org/sdr/SWAA2024121658783), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 4R IS CRACKED AT BS 727D.<[01] REMOVED AND REPLACED NEW STRINGER CLIP P/N#143A1010-1 AT BS 727D STR 4R PER SRM 51-40-02-0G-0 AND PER DWG
- [SDR SWAA2024121658795](https://openairdocs.org/sdr/SWAA2024121658795), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 5R IS CRACKED AT BS 727E.<[01] REMOVED AND REPLACED STRINGER CLIP 5R BS727E PER SRM 51-40-02; DWG#146A1112 REV:-. AND SRM 51-10-02 PARAG
- [SDR SWAA2024121658784](https://openairdocs.org/sdr/SWAA2024121658784), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 6R IS CRACKED AT BS 727E.<[01] REMOVED AND REPLACED STRINGER CLIP 6R BS727E PER SRM 51-40-02; DWG#146A1112 REV:-. AND SRM 51-10-02 PARAG
- [SDR SWAA2024121658786](https://openairdocs.org/sdr/SWAA2024121658786), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 5L IS CRACKED AT BS 727E.<[01] REMOVED AND REPLACED STRINGER CLIP 5L BS727E PER SRM 51-40-02; DWG#146A1112 REV:-.AND SRM 51-10-02 PARAGR
- [SDR SWAA2024121658787](https://openairdocs.org/sdr/SWAA2024121658787), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 6L IS CRACKED AT BS 727E.<[01] REMOVED AND REPLACED STRINGER CLIP 6L BS727E PER SRM 51-40-02; DWG#146A1112 REV:-. AND SRM 51-10-02 PARAG
- [SDR SWAA2024121658788](https://openairdocs.org/sdr/SWAA2024121658788), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 4L IS CRACKED AT BS 767.<[01] REMOVED AND REPLACED STRINGER CLIP P/N#143A1010-1 AT BS 767 STR 4L PER SRM 51-40-02-0G-0 AND PER DWG#146A1
- [SDR SWAA2024121658789](https://openairdocs.org/sdr/SWAA2024121658789), Nov 11, 2024: STRINGER CLIP. CRACKED. INTERIOR; STRINGER CLIP 5L IS CRACKED AT BS 767.<[01] REMOVED AND REPLACED NEW STRINGER CLIP P/N#143A1010-1 AT BS 767 STR 5L PER SRM 51-40-02-0G-0 AND PER DWG#1
- [SDR SWAA2024121658798](https://openairdocs.org/sdr/SWAA2024121658798), Nov 11, 2024: WEB. CORRODED. ACB; FLOOR THRESHOLD WEB HAS CORROSION FROM BS 787+18 TO BS 827+11; RBL 28 WL 160 IN VARIOUS LOCATIONS MARKED.<[01] REMOVED AND REPLACED THRESHOLD WEB FROM BS79

All 325: https://openairdocs.org/aircraft/N277WN/reports.md

## STCs that may be installed (OpenAirDocs) (32)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Boeing 737-7H4)

- [STC ST00555AT](https://openairdocs.org/stc/ST00555AT): Installation of Airshow 210 system. AIRCRAFT RECONFIG TECHNOLOGIES, LLC. Lists 737 Series
- [STC SA4842SW](https://openairdocs.org/stc/SA4842SW): Modification of air to air heat exchanger (P/N 182820-2 Series 2). Honeywell International Inc. Lists 737 Series
- [STC SA270NW](https://openairdocs.org/stc/SA270NW): Installation of modified seat. Aviation Technical Services. Lists 737 Series
- [STC ST01162NY](https://openairdocs.org/stc/ST01162NY): Installation of Literature Pockets. Magee Plastics Company. Lists 737 Series
- [STC SA2607SO](https://openairdocs.org/stc/SA2607SO): Installation of coffee maker P/N 416-1001-29. B/E Aerospace Inc. Lists 737 Series
- [STC SA2608SO](https://openairdocs.org/stc/SA2608SO): Installation of rail assembly, P/N 416-0201-15. B/E Aerospace Inc. Lists 737 Series
- [STC SA3058SO](https://openairdocs.org/stc/SA3058SO): Installation of coffee maker 416-0001-23 and rail assembly 416-0201-5. B/E Aerospace Inc. Lists 737 Series
- [STC ST01476AT](https://openairdocs.org/stc/ST01476AT): Installation of coffee maker. B/E Aerospace Inc. Lists 737 Series
- [STC ST01778AT](https://openairdocs.org/stc/ST01778AT): Installation of espresso maker p/n 3510-0066-01. B/E Aerospace Inc. Lists 737 Series
- [STC SA629GL](https://openairdocs.org/stc/SA629GL): Installation of Grimes galley, Model 1545LW unit 2 and unit 4. B/E Aerospace. Lists 737 Series
- [STC ST01332AT](https://openairdocs.org/stc/ST01332AT): Installation of Galley Service Carts. Champ International, Inc. Lists 737 Series
- [STC ST09870SC](https://openairdocs.org/stc/ST09870SC): Installation of Mechanical Window Shades. Lou Martin & Associates. Lists 737 Series
- [STC ST00033AT](https://openairdocs.org/stc/ST00033AT): Installation of a single Mode S system and provisions for a TCAS II system. General Aerospace, Inc. Lists 737 Series
- [STC SA4532NM](https://openairdocs.org/stc/SA4532NM): Installation of Coltech, CTD-80 ATSCALL, enabling company calling of selected aircraft via company selected radio. Avtech Corporation. Lists 737 Series
- [STC ST4532NM](https://openairdocs.org/stc/ST4532NM): Installation of Coltech CTD-80 ATSCALL, enabling company calling of selected aircraft via company selected radio. Avtech Corporation. Lists 737 Series
- [STC ST00774NY](https://openairdocs.org/stc/ST00774NY): Installation of a passenger cabin Liquor/beverage service cart P/N E500170. (757-222) (767-222) (727-222) (737 SERIES 222, 291, 322, 522) (747-100 SERIES 238B). Driessen Aircraft Interior Systems USA, Inc. Lists 737 Series
- [STC ST02052AT](https://openairdocs.org/stc/ST02052AT): Installation of a single Collins GNLU910A flight management system, along with global navigation satellite system sensor. General Aerospace, Inc. Lists 737 Series
- [STC SA02034AT](https://openairdocs.org/stc/SA02034AT): Manufacture of tray carrier, P/N 2282-506. BFE Services. Lists 737 Series
- [STC ST01968AT](https://openairdocs.org/stc/ST01968AT): Manufacture of inserts for galley stowage. JK Aerospace, Inc. Lists 737 Series
- [STC SA01916AT](https://openairdocs.org/stc/SA01916AT): Manufacture of Tray Carrier P/N 1839-501. BFE Services. Lists 737 Series
- [STC SA2534SO](https://openairdocs.org/stc/SA2534SO): Installation of window shades, acoustic panes and reveals. Magee Plastics Company. Lists 737 Series
- [STC ST179CH](https://openairdocs.org/stc/ST179CH): Installation of cargo container curtain. Plastic Composites Corp. Lists 737 Series
- [STC SA00056LA](https://openairdocs.org/stc/SA00056LA): Installation of Weber Coffeemaker, P/N 870130-415. Monogram Systems. Lists 737 Series
- [STC SA6090NM](https://openairdocs.org/stc/SA6090NM): Installation of emergency vision assurance system (EVAS). VisionSafe Corporation. Lists 737 Series
- [STC SA370NW](https://openairdocs.org/stc/SA370NW): Removal of passenger interior, installation of cargo compartment liners and cargo tie down equipment. Western Metal Products. Lists 737 Series
- [STC SA2589CE](https://openairdocs.org/stc/SA2589CE): Install Bennetts Seat Converter Stowage Compartment on passenger seat(s). John's Aircraft and Upholstery. Lists 737 Series
- [STC SA1029NW](https://openairdocs.org/stc/SA1029NW): Installation of a cargo system. Western Metal Products. Lists 737 Series
- [STC SA1258EA](https://openairdocs.org/stc/SA1258EA): Installation of Cosco model78-( ) child restraint system. (172M S/N 17263459 - 17267584). Miller Stuart R. Lists 737 Series
- [STC SA1052SO](https://openairdocs.org/stc/SA1052SO): Installation of GE battery P/N43B022RB36 in place of Marathon P/N CA-727-7, CA-727-20, or CA-27-20 batteries or SAFT P/N23180 batteries; or installation of GE battery P/N 43B020RB10 replacing Marathon P/N CA-727-7, CA-727-20 or CA-27-20 or SAFT P/N 23186 or 23180 batteries. General Electric Company. Lists 737 Series
- [STC SA1082NW](https://openairdocs.org/stc/SA1082NW) (historical): Installation of auxiliary fuel tanks in the aft cargo compartment. (737 series -2K9A). Rogerson ATS. Lists 737 Series

### Approved for the engine (CFM International CFM56-7B24 series)

- [STC SE04840NY](https://openairdocs.org/stc/SE04840NY): Installation of HarcoSemco Exhaust Gas Temperature (EGT) Electrical Harnesses in CFM56-7 engine. Kilroy Aviation LLC
- [STC SE03036CH](https://openairdocs.org/stc/SE03036CH): Application of a deep compressive stress layer using a Low Plasticity Burnishing (LPB) process on CFM56-7 Series Engines Stage 1 High Pressure Compressor (HPC) Blade Dovetails in accordance with Delta Air Lines Inc. Drawing No. 72-0396, Revision B, dated November 3, 2011, or later FAA Approved revision. Delta Air Lines Inc

## Related

- Other Boeing 737-7H4 aircraft: https://openairdocs.org/model/boeing-737-7h4/aircraft.md
- The CFM International CFM56-7B24 series engine: https://openairdocs.org/engine/cfm-international-cfm56-7b24-series.md

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