# N441US: 1990 Boeing 737-4B7

- Status: Valid registration
- Airframe: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (registry code 138449C, 149 seats)
- Engine: [GE CFM56 series](https://openairdocs.org/engine/ge-cfm56-series) (registry code 30016)
- Serial number: 24812
- Year built: 1990
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: July 23, 1990
- Certificate issued: June 1, 2021
- Expires: June 30, 2028
- Mode S code: A55027
- Registered owners: [City Of Brownsville Texas](https://openairdocs.org/faa-owner/CITY%20OF%20BROWNSVILLE%20TEXAS), [Department Of Aviation](https://openairdocs.org/faa-owner/DEPARTMENT%20OF%20AVIATION)
- Location: [Brownsville, TX](https://openairdocs.org/faa-place/TX/Brownsville)
- Owner type: Government
- Owner's area on the map: 25.9439° N, 97.3179° W: Placed by OpenAirDocs at the center of ZIP code 78521, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=441US
- Page: https://openairdocs.org/aircraft/N441US

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 GE CFM56 model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Boeing 737-4B7)

None in force.

### Matched by engine (GE CFM56 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB NYC92LA018](https://openairdocs.org/ntsb/NYC92LA018), Oct 23, 1991: Boeing 737-4B7 (N441US), Boston, MA, no damage. Probable cause: A LATCH FAILURE ON A DOOR IN THE AFT GALLEY WHICH ALLOWED A LIQUOR KIT TO ROLL FORWARD.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19911023047709A](https://openairdocs.org/incident/19911023047709A), Oct 23, 1991: Boeing 7374B7 (N441US), Boston, MA. Aft galley door opened on landing roll. Liquor cart rolled toward attendant. Tried fend off and broke her wrist.

## Service difficulty reports (189, 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 I5EA201906190001](https://openairdocs.org/sdr/I5EA201906190001), Jun 15, 2019: LANYARD. MISROUTED. FOUND L2 DOOR SLIDE PACK LAYNRD ROUTED WRONG. RE-MOVED AND L2 DOOR SLIDE PACK LYANRD REF: AMM TASK 25-61-35 402-007. NO DEFECTS NOTED.
- [SDR I5EA2019010200000](https://openairdocs.org/sdr/I5EA2019010200000), Feb 21, 2019: SMOKE DETECTOR. FALSE ACTIVATION. DISCREPANCY: AFT CARGO FIRE WARNING AT 200-300 FEET AFTER TAKE OFF AND RETURNED TO THE FIELD. CORRECTIVE ACTION: REF LOGPAGES - 10242, 10243, 10244 - REPLACED F
- [SDR I5EA2019022101](https://openairdocs.org/sdr/I5EA2019022101), Feb 21, 2019: FIRE WARNING. ILLUMINATED. AFT CARGO FIRE WARNING AT 200-300 FEET AFTER TAKE OFF, RETURNED TO AIRPORT
- [SDR I5EA2018091100000](https://openairdocs.org/sdr/I5EA2018091100000), Sep 8, 2018: BATTERY PACK. DISCHARGED. PASSENGER CABIN (2 EACH ) EMERGENCY LIGHTS BATTERY INOPERATIVE. REMOVED AND REPLACED 2 EACH BATTERY PACK OF EMERGENCY LIGHT IAW AMM 33-51-51, PAGE 202, OPERATIO
- [SDR I5EA2017110800002](https://openairdocs.org/sdr/I5EA2017110800002), Nov 7, 2017: LIGHT. INOPERATIVE. R2 DOOR SLIDE FOUND TO HAVE SEVERAL EMERGENCY LIGHTS ON THE SLIDE INOPERATIVE. REMOVED AND REPLACED THE R2 DOOR SLIDE IAW AMM 25-61-35.
- [SDR I5EA20171105](https://openairdocs.org/sdr/I5EA20171105), Nov 7, 2017: LIGHT. INOPERATIVE. R1 DOOR SLIDE FOUND TO HAVE SEVERAL EMERGENCY LIGHTS TO BE INOPERATIVE. REMOVED AND REPLACED THE DOOR SLIDE IAW AMM 25-61-35.
- [SDR I5EA2017110800001](https://openairdocs.org/sdr/I5EA2017110800001), Nov 7, 2017: SLIDE. NO TEST. R1 DOOR SLIDE FAILED TO DEPLOY DURING DEMONSTRATION. INFLATION BOTTLE SHOWED DEPLETED AFTER ATTEMPT. REMOVED AND REPLACED THE R1 DOOR SLIDE IAW AMM 25-61-35.
- [SDR I5EA201911071005](https://openairdocs.org/sdr/I5EA201911071005), Oct 30, 2015: STRUCTURE. HANDLER ERROR. DURING TOWING RH VERTICAL STABILIZER HIT ANOTHER AIRCRAFT. DAMAGE LOCATED BETWEEN FIN STATION 283.50 AND 209.90. RUDDER STATION 196.46 APPROXIMATELY
- [SDR USAA2013062100008](https://openairdocs.org/sdr/USAA2013062100008), Jun 20, 2013: LIGHT. BROKEN. EMERGENCY EXIT LIGHT ASSY BROKEN FWD OF RT PAX DOOR. R & R EMERGENCY EXIT SIGN.
- [SDR USAA2013040900007](https://openairdocs.org/sdr/USAA2013040900007), Apr 8, 2013: WIRE. BROKEN. MAINTENANCE FOUND BROKEN WIRING IN LOWER PORTION OF FORWARD COAT CLOSET. MAINTENANCE REPAIRED BROKEN WIRING IN FORWARD COAT CLOSET (EMERGENCY LIGHT) PER MPPM 54
- [SDR USAA2013020700017](https://openairdocs.org/sdr/USAA2013020700017), Feb 6, 2013: LIGHT. UNSECURE. MAINTENANCE REPORTED THAT PAX SEAT 11C EMERGENCY LIGHT IS LOOSE AND HANGING. MAINTENANCE SECURED EMERGENCY LIGHT ASSEMBLY AT PAX SEAT 11C.
- [SDR USAA2013020700016](https://openairdocs.org/sdr/USAA2013020700016), Feb 6, 2013: WIRE. DISCONNECTED. MAINTENANCE REPORTED THE EMERGENCY EXIT LIGHT AT PAX SEAT 21C INOP. MAINTENANCE RECONNECTED WIRES FOR EMERGENCY EXIT LIGHT AT PAX SEAT 21C. OPS CHECK OK.
- [SDR USAA2013013100014](https://openairdocs.org/sdr/USAA2013013100014), Jan 30, 2013: ATTACH BOLT. MISSING. CREW REPORTED THE L2 DOOR DOES NOT CLOSE PROPERLY. MAINTENANCE FOUND L2 DOOR UPPER GATE NOT MOVING. REMOVED DOOR LINER AND REPLACED UPPER GATE PUSHROD ATTACH BO
- [SDR USAA2013011400010](https://openairdocs.org/sdr/USAA2013011400010), Jan 10, 2013: FLAP. DELAMINATED. C6 CHECK - DELAMINATION ON UPPER SURFACE OF RIGHT OUTBOARD FOREFLAP ASSEMBLY AT CENTER SECTION OF TRAILING EDGE WEDGE. REPLACED RIGHT OUTBOARD FOREFLAP ASSEMBLY
- [SDR USAA2012111900011](https://openairdocs.org/sdr/USAA2012111900011), Nov 17, 2012: SIGN. MISSING. CREW REPORTED THE EXIT SIGN AT SIDEWALL OF EXIT ROW, AIRCRAFT RIGHT, MISSING. MAINTENANCE INSTALLED EXIT SIGN AT EXIT ROW SEAT.
- [SDR USAA2012101000002](https://openairdocs.org/sdr/USAA2012101000002), Oct 9, 2012: LENS. UNSECURE. MAINTENANCE REPORTED THE EMERGENCY EXIT LENS ABOVE ROW 11 LEFT HAS FALLEN OFF. MAINTENANCE RE-INSTALLED EXIT SIGN LENS ABOVE LEFT AIRCRAFT ROW 11. OPS CHECK NOR
- [SDR USAA2012070200023](https://openairdocs.org/sdr/USAA2012070200023), Jun 28, 2012: MECHANISM. FAULTY. EN ROUTE FROM EWR TO CLT, CREW REPORTED WHEN MOVING AILERON TO THE LEFT, THERE SEEMS TO BE A "CATCH" AT ABOUT 4 UNITS ON THE AILERON TRIM INDICATOR. FLIGHT LAND
- [SDR USAA2012061500023](https://openairdocs.org/sdr/USAA2012061500023), Jun 14, 2012: GUIDE ARM. OUT OF ADJUST. CREW REPORTED THE AFT LEFT ENTRY DOOR IS HARD TO CLOSE. MAINTENANCE ADJUSTED GUIDE ARM ON AFT LEFT ENTRY DOOR PER AMM 52-13-31-401 AND PERFORMED AN OPERATIONAL 
- [SDR USAA2012060600010](https://openairdocs.org/sdr/USAA2012060600010), Jun 5, 2012: BEARING. DAMAGED. CREW REPORTED THE AILERONS BINDING WHEN YOU ARE TURNING THE YOKE TO ABOUT 2 ON BOTH TURNING LEFT OR RIGHT. MAINTENANCE TROUBLESHOT TO AILERON ARTIFICIAL FEEL AN
- [SDR USAA2012050100015](https://openairdocs.org/sdr/USAA2012050100015), Apr 30, 2012: PLACARD. MISSING. MAINTENANCE REPORTED THE EXIT PLACARD AT ROW 11 MISSING. MAINTENANCE INSTALLED PLACARD. OK FOR SERVICE.
- [SDR USAA2012041700012](https://openairdocs.org/sdr/USAA2012041700012), Apr 17, 2012: LENS. MISSING. MAINTENANCE REPORTED THE EMERGENCY LIGHT LENS AT EMERGENCY EXIT ROW WAS MISSING. MAINTENANCE REPLACED EMERGENCY LIGHT LENS AT EMERGENCY EXIT ROW.
- [SDR USAA2012032700002](https://openairdocs.org/sdr/USAA2012032700002), Mar 24, 2012: SKIN. CRACKED. C5 CHECK - 2 CRACKS ON LOWER FUSELAGE SKIN AT EXHAUST PORT DUCT AT BS 380, LBL 3. REPAIRED LOWER FUSELAGE SKIN AT EXHAUST PORT DUCT AT BS 380, LBL 3 IAW EA 1038
- [SDR USAA2012032900001](https://openairdocs.org/sdr/USAA2012032900001), Mar 19, 2012: SEAL. DETERIORATED. C5 CHECK - EMERGENCY LIGHTING AFT OF THE RIGHT WING TRAILING EDGE, WING TO BODY FAIRING IS INOP. FOUND MOISTURE DETERIORATED SEAL & BAD LIGHT BULB. CLEANED OUT 
- [SDR USAA2012022700013](https://openairdocs.org/sdr/USAA2012022700013), Feb 25, 2012: CUSHION. INTERFERENCE. CREW REPORTED THE FORWARD ENTRY DOOR WAS HARD TO OPEN/CLOSE. NEEDS LUBE. MAINTENANCE REMOVED AND REPLACED THE FORWARD FLIGHT ATTENDANT HEAD CUSHION TO PREVENT I
- [SDR USAA2012011300015](https://openairdocs.org/sdr/USAA2012011300015), Jan 10, 2012: BOLT. BROKEN. CREW REPORTED THAT THE AIRCRAFT REQUIRES 2.5 UNITS OF RUDDER TRIM TO THE LEFT. (FLAPS 40 DEGREES, FUEL BALANCED AILERON TRIM 0 BALL IN CENTER) NOTE: AT CRUISE, 
- [SDR USAA2012011100013](https://openairdocs.org/sdr/USAA2012011100013), Jan 10, 2012: PUSHROD. OUT OF ADJUST. MAINTENANCE REPORTED THE R1 SERVICE DOOR FOR NOT CLOSING. MAINTENANCE FOUND THE UPPER ROLLER TO BE ROTATING BEFORE GOING INTO THE LATCH FITTING. ADJUSTED HORIZO
- [SDR USAA2011112800007](https://openairdocs.org/sdr/USAA2011112800007), Nov 27, 2011: MEGAPHONE. INOPERATIVE. MEGAPHONE INOPERATIVE, WILL NOT TEST. REMOVED AND REPLACED MEGAPHONE IAW AMM 25-60-00, OPS CHECK GOOD.
- [SDR USAA2011101700010](https://openairdocs.org/sdr/USAA2011101700010), Oct 15, 2011: LENS. MISSING. MAINTENANCE REPORTED THE EMERGENCY LIGHT LENS AT ROW 11L MISSING. MAINTENANCE INSTALLED LENS. AIRCRAFT OK FOR SERVICE.
- [SDR USAA2011091500003](https://openairdocs.org/sdr/USAA2011091500003), Sep 14, 2011: OIL SYSTEM. OVERSERVICED. DURING CRUISE (APPROXIMATELY 1 HOUR FLIGHT), FLIGHT ATTENDANTS REPORTED AN ODOR OF DIRTY SOCKS/BURNING OIL SMELL IN THE AREA OF SEAT ROWS 18-23. WHEN APPROACHIN
- [SDR USAA2011072100019](https://openairdocs.org/sdr/USAA2011072100019), Jul 16, 2011: FITTING. CRACKED. FPBH INSPECTION - CRACK ON CLIP AT BS 360 BETWEEN S14L TO S15L. REPLACED CLIP AT BS 360 BETWEEN S14L TO S15L IAW B737 SRM 51-40-02 & AIRBUS DRAWING 69-58280.
- [SDR USAA2011072100018](https://openairdocs.org/sdr/USAA2011072100018), Jul 16, 2011: CHANNEL. CRACKED. FPBH INSPECTION - CRACK ON U-CHANNEL AT BS 360, S14L. REPLACED U-CHANNEL AT BS 360, S14L IAW B737 SRM 51-40-02.
- [SDR USAA2011072100017](https://openairdocs.org/sdr/USAA2011072100017), Jul 16, 2011: ANGLE. CRACKED. FPBH INSPECTION - CRACK ON SKIN CLIP ANGLE BETWEEN BS 294.5 TO BS 303.9, S10L. REPLACED SKIN CLIP ANGLE IAW B737 SRM 51-20-05 & BOEING DRAWING 65-17684.
- [SDR USAA2011072100016](https://openairdocs.org/sdr/USAA2011072100016), Jul 16, 2011: BULKHEAD. CRACKED. FPBH INSPECTION - CRACK ON WEB AT BS 180, WL 207, LBL 27. REPLACED WEB AT BS 180, WL 207, LBL 27 IAW BOEING DRAWING 65-45833.
- [SDR USAA20110615SB100](https://openairdocs.org/sdr/USAA20110615SB100), Jun 14, 2011: LIGHT. MISSING. CLT - CREW REPORTED THE EMERGENCY EXIT LIGHT MISSING ON SEAT ROW 12, LEFT SIDE. MAINTENANCE REPLACED EMERGENCY EXIT LIGHT ON SEAT ROW 12, LEFT SIDE. OPS CHECK S
- [SDR USAA2011032991275](https://openairdocs.org/sdr/USAA2011032991275), Mar 26, 2011: SKIN. DELAMINATED. CLT - C4 - DELAMINATION ON NR 6 SPOILER PANEL UPPER SKIN AT WBL 210. REPLACED NR 6 SPOILER PANEL IAW B737 AMM 27-61-11.
- [SDR USAA2011032991274](https://openairdocs.org/sdr/USAA2011032991274), Mar 25, 2011: SKIN. DELAMINATED. CLT - C4 - DELAMINATION ON NR 3 SPOILER PANEL UPPER SKIN. REPLACED NR 3 SPOILER IAW B737 AMM 27-61-11.
- [SDR USAA2011032991271](https://openairdocs.org/sdr/USAA2011032991271), Mar 25, 2011: SLIDE. LOW PRESSURE. CLT - C4 - L-1 DOOR SLIDE BOTTLE PRESSURE LOW. REPLACED L-1 DOOR SLIDE IAW JOB CARD 03C10552002.
- [SDR USAA2011032591249](https://openairdocs.org/sdr/USAA2011032591249), Mar 22, 2011: SKIN. CRACKED. CLT - C4 - TWO CRACKS ON FUSELAGE SKIN AT BS 727F + 3 INCHES & BS 727F + 8.5 INCHES, S21L. REPAIRED FUSELAGE SKIN AT BS 727F + 3 INCHES & BS 727F + 8.5 INCHES, 
- [SDR USAA2011032991273](https://openairdocs.org/sdr/USAA2011032991273), Mar 21, 2011: SKIN. CRACKED. CLT - C4 - CRACK ON FUSELAGE SKIN AT BS 727F, S23L. REPAIRED FUSELAGE SKIN AT BS 727F, S23L IAW B737 SRM 53-00-01 REPAIR 31.
- [SDR USAA2011032991272](https://openairdocs.org/sdr/USAA2011032991272), Mar 20, 2011: SKIN. CRACKED. CLT - C4 - CRACK ON FUSELAGE SKIN JUST FORWARD OF BS 727F, S24R. REPAIRED FUSELAGE SKIN JUST FORWARD OF BS 727F, S24R IAW B737 SRM 53-00-01 REPAIR 31.
- [SDR USAA20101122SB192](https://openairdocs.org/sdr/USAA20101122SB192), Nov 19, 2010: POWER SUPPLY. INOPERATIVE. FLL - MAINTENANCE REPORTED THE EXTERIOR OVERWING EMERGENCY EXIT LIGHTS, FORWARD AND AFT OF EMERGENCY EXIT HATCHES LEFT SIDE, INOPERATIVE. MAINTENANCE REMOVED AN
- [SDR USAA20100806SB127](https://openairdocs.org/sdr/USAA20100806SB127), Aug 6, 2010: MEGAPHONE. INOPERATIVE. DCA - MAINTENANCE REPORTED THE AFT MEGAPHONE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE AFT MEGAPHONE. OPERATIONAL CHECK GOOD.
- [SDR USAA20100513SB073](https://openairdocs.org/sdr/USAA20100513SB073), May 12, 2010: CONNECTOR. BROKEN. ORD - MAINTENANCE REPORTED THE FLOOR LEVEL EMERGENCY LIGHT AT SEAT 7ABC INOPERATIVE. MAINTENANCE REPAIRED WIRE CONNECTOR AT FLOOR LEVEL EMERGENCY LIGHT AT SEAT 
- [SDR USAA2010040590718](https://openairdocs.org/sdr/USAA2010040590718), Apr 3, 2010: SKIN. DELAMINATED. CLT - C3 - MAJOR REPAIR - DELAMINATION ON LEFT WING NR 2 SPOILER UPPER SURFACE ABOVE ACTUATOR ATTACH POINT. REPLACED LEFT WING NR 2 SPOILER IAW B737 AMM 27-61-1
- [SDR USAA2010040590720](https://openairdocs.org/sdr/USAA2010040590720), Apr 2, 2010: FUSE. BLOWN. CLT - C3 - EEL - SEAT MOUNTED EMERGENCY LIGHTS ARE NOT WORKING ON ROW 24 LEFT & 25 LEFT. REPLACED FUSE F1 ON BATTERY PACK M1137.
- [SDR USAA20100311SB034](https://openairdocs.org/sdr/USAA20100311SB034), Mar 10, 2010: WIRE. DISCONNECTED. CLT - MAINTENANCE REPORTED THE FORWARD COAT CLOSET EMERGENCY LIGHTS WERE INOPERATIVE. THE WIRING HARNESS WAS EXPOSED AND THE PROTECTIVE COVER WAS BROKEN. MAINTE
- [SDR USAA20100308SB030](https://openairdocs.org/sdr/USAA20100308SB030), Mar 6, 2010: FUSE. BLOWN. ORD - MAINTENANCE REPORTED THE EMERGENCY EXIT LIGHTS AT SEAT ROWS 24, 25 AND RIGHT AFT SERVICE DOOR INOPERATIVE. MAINTENANCE REPLACED FUSE IN BATTERY SUPPLY UNI
- [SDR USAA2010022390429](https://openairdocs.org/sdr/USAA2010022390429), Feb 23, 2010: SKIN. CRACKED. CLT - RON - MAJOR REPAIR - CRACK IN FUSELAGE SKIN AT BS 727E + 12.5 INCHES, S23R. REPAIRED FUSELAGE SKIN AT BS 727E + 12.5 INCHES, S23R IAW B737 SRM 53-00-01 RE
- [SDR USAA2010022390430](https://openairdocs.org/sdr/USAA2010022390430), Feb 22, 2010: SKIN. CRACKED. CLT - RON - MAJOR REPAIR - CRACK IN FUSELAGE SKIN AT BS 727G, S25L. REPAIRED FUSELAGE SKIN AT BS 727G, S25L IAW EA 101763.
- [SDR USAA20100129SB011](https://openairdocs.org/sdr/USAA20100129SB011), Jan 27, 2010: CHARGER. INOPERATIVE. CLT - MAINTENANCE REPORTED THE BULLNOSE EMERGENCY LIGHT ON OVERHEAD BIN, ROW 22 RIGHT, IS INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE RIGHT CHARGER ASSEMB

All 189: https://openairdocs.org/aircraft/N441US/reports.md

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Boeing 737-4B7 aircraft: https://openairdocs.org/model/boeing-737-4b7/aircraft.md
- The GE CFM56 series engine: https://openairdocs.org/engine/ge-cfm56-series.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.