# Service difficulty reports: N251NN A list on [N251NN](https://openairdocs.org/aircraft/N251NN.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR SIMA202603198001](https://openairdocs.org/sdr/SIMA202603198001.md): Hydraulic Line · leaking · Mar 18, 2026 · N251NN · Emb ERJ170200LR · Hydraulic System, Main > HYD 2 LO QTY CYAN EICAS MESSAGE UPON LANDING AT 22%.AFTER A 3-5 MIN TAXI QTY DROPPED TO 16%. MX WAS CONTACTED AND QTY DROPPED TO 6% BEFORE COMMANDED ENG 2 OFF HYD 2 SYS ELEC PUMP OFF. AFTER SHUT DOWN QTY INCREASED TO 8%. A/C TOWED TO GATE. "TRANSFERRED TO NRWC - [SDR SIMA20251028007](https://openairdocs.org/sdr/SIMA20251028007.md): Floorbeam · corroded · Oct 8, 2025 · N251NN · Emb ERJ170200LR · Fuselage Main, Floor Beam > SSI 53-23-005: AFT GALLEY LH FLOOR BEAM CORRODED AT FR 87 (MAJOR REPAIR) (LEVEL 2 CORROSION). RAR THE LH FLOOR BEAM AT FR87 IAW ERJ 175 SRM 51-40-08 - [SDR SIMA20251008005](https://openairdocs.org/sdr/SIMA20251008005.md): Seat Track · corroded · Oct 8, 2025 · N251NN · Emb ERJ170200LR · Fuselage, Seat/Cargo Attach Fittings > SSI 53-23-005: RH CENTER SEAT TRACK CORRODED BTWN FR 84-85 (MAJOR REPAIR) (LEVEL 2 CORROSION). CUTOUT DAMAGED SECTION AND INSTALLED REPAIR SPLICE ON THE RH CENTER SEAT TRACK BTWN FR 84-85 IAW ENVOY ERS-EJ-53MR-5273 - [SDR SIMA20251008006](https://openairdocs.org/sdr/SIMA20251008006.md): Floorbeam · corroded · Oct 8, 2025 · N251NN · Emb ERJ170200LR · Fuselage Main, Floor Beam > SSI 53-23-005: AFT GALLEY RH CENTER FLOOR BEAM SPLICE CORRDED AT FR 89 (LEVEL 2 CORROSION). RAR AFT GALLEY RH CENTER FLOOR BEAM SPLICE AT FR 89 IAW ERJ 175 SRM 51-40-08. - [SDR SIMA20251008002](https://openairdocs.org/sdr/SIMA20251008002.md): Floorbeam · corroded · Oct 8, 2025 · N251NN · Emb ERJ170200LR · Fuselage Main, Floor Beam > SSI 53-23-005: AFT GALLEY RH CENTER FLOOR BEAM SPLICE CORRDED AT FR 90 (LEVEL 2 CORROSION) RAR AFT GALLEY RH CENTER FLOOR BEAM SPLICE AT FR 90 IAW ERJ 175 SRM 51-40-08 - [SDR SIMA20251008004](https://openairdocs.org/sdr/SIMA20251008004.md): Shear Panel · corroded · Oct 8, 2025 · N251NN · Emb ERJ170200LR · Fuselage Miscellaneous Structure > AFT GALLEY CENTER SHEAR PANEL CORRODED (LEVEL 2 CORROSION) RAR AFT GALLEY CENTER SHEAR PANEL IAW ERJ 175 SRM 51-40-08. - [SDR SIMA20251008003](https://openairdocs.org/sdr/SIMA20251008003.md): Shear Panel · corroded · Oct 8, 2025 · N251NN · Emb ERJ170200LR · Fuselage Miscellaneous Structure > AFT GALLEY RH SHEAR PANEL CORRDED (LEVEL 2 CORROSION) RAR AFT GALLEY RH SHEAR PANEL IAW ERJ 175 SRM 51-40-08. - [SDR SIMA20251007002](https://openairdocs.org/sdr/SIMA20251007002.md): Seal Rest · corroded · Oct 7, 2025 · N251NN · Emb ERJ170200LR · Fuselage Main, Structure > FWD CARGO DOOR CUTOUT STRUCTURE LOWER CENTER SEAL REST IS CORRODED. (MAJOR REPAIR) (LEVEL 2 CORROSION). REMOVED AND REPLACED FWD CARGO DOOR CUTOUT STRUCTURE LOWER CENTER SEAL REST IAW ERJ 175 SRM 51-40-08 - [SDR SIMA20251007001](https://openairdocs.org/sdr/SIMA20251007001.md): Seal Rest · corroded · Oct 7, 2025 · N251NN · Emb ERJ170200LR · Fuselage Main, Structure > FWD CARGO DOOR CUTOUT STRUCTURE LOWER AFT CORNER SEAL REST IS CORRODED (MAJOR REPAIR) (LEVEL 2 CORROSION). REMOVED AND REPLACED FWD CARGO DOOR CUTOUT STRUCTURE LOWER AFT CORNER SEAL REST IAW ERJ 175 SRM 51-40-08 - [SDR SIMA20251001002](https://openairdocs.org/sdr/SIMA20251001002.md): Skin · gouged · Oct 1, 2025 · N251NN · Emb ERJ170200LR · Wing, Plate/Skin > LH WING FIXED LEADING EDGE UPPER SKIN BETWEEN SLATS 3/4 IS GOUGED. (MAJOR REPAIR). RAR LH WING FIXED LEADING EDGE UPPER SKIN BETWEEN SLATS 3/4 IAW ERJ 175 SRM 51-40-08 - [SDR SIMA20250524001](https://openairdocs.org/sdr/SIMA20250524001.md): Pcu · faulted · May 24, 2025 · N251NN · Emb ERJ170200LR · Drag Control System > SPOILER FAULT EMERGENCY DECLARED RETURN DFW. OVRWGHT LANDING. BELW SINK RATE. RAR RH IB MFS PCU IAW 27-65-01-400-801-A00. LEAK CHK, OPS CHK GOOD AT THIS TIME. NO DEFECTS NOTED AT THIS TIME REFER TO NRWC 051-DFW-04741 ITEMS 1, 2 AND 3 FOR FULL WORK SCOPE COMPLE - [SDR SIMA20230520001](https://openairdocs.org/sdr/SIMA20230520001.md): Tire · failed · May 20, 2023 · N251NN · Emb ERJ170200LR · Landing Gear Brake System > SUSPECTED BLOWN LEFT TIRE-C/A-PERFORMED INSPECTION OF THE LANDING GEAR TIRE TREAD FAILURE WITH LANDING GEAR FULLY DEPLOYED IAW AMM 05-50-15. NO DEFECTS NOTED.INSPECTED ALL WHEEL ASSEMBLIES FOR PSSIBLE DEFECTS.NO DEFECTS NOTED. ACFT GOOD FOR SERVICE, REF. 32-49 - [SDR SIMA20230119002](https://openairdocs.org/sdr/SIMA20230119002.md): Spar · cracked · Jan 19, 2023 · N251NN · Emb ERJ170200LR · Wing Spar > LH WING TIP FORWARD SPAR IS CRACKED.-C/A- - [SDR SIMA20230119001](https://openairdocs.org/sdr/SIMA20230119001.md): Spar · cracked · Jan 19, 2023 · N251NN · Emb ERJ170200LR · Wing Spar > RH WING OUTBD SPAR 1 CRACKED ON AFT OUTBD. LOWER RADIUS ON SPARS LOWER FLANGE.-C/A-COMPLETED INSTALLATION OF RH WING OUTBD. SPAR IAW SRM 51-40-08. - [SDR SIMA20221227001](https://openairdocs.org/sdr/SIMA20221227001.md): Spar · cracked · Dec 27, 2022 · N251NN · Emb ERJ170200LR · Wing, Plate/Skin > LH WINGLET CRACKED AT FWD SPAR 1 ATTACH POINT.-C/A-COMPLETE:LH WINGLET REPLACED ON NRTC E949108 - [SDR SIMA20220704001](https://openairdocs.org/sdr/SIMA20220704001.md): Lavatory · activation error · Jul 4, 2022 · N251NN · Emb ERJ170200LR · Smoke Detection > LAV SMOKE FALSE INDICATION IN CLIMB NO PAX OR FUMES IN BOTH LAVATORY AFTER INVESTIGATION-C/A-PERFORMED OPS TEST OF THE LAV. SMOKE DETECTOR PER ERJ AMM 26-14-01. OPS CHECK GOOD. NO FURTHER MAINTENANCE REQUIRED. - [SDR SIMA20220117001](https://openairdocs.org/sdr/SIMA20220117001.md): None · none · Jan 17, 2022 · N251NN · Emb ERJ170200LR · Emergency Lighting > #1 FA EMERGENCY FLASHLIGHT CRADLE BROKEN-C/A-RAR FWD FLIGHT ATTENDANT EMERGENCY FLASHLIGHT ASSY IAW E-175 AMM 33-51-01. - [SDR SIMA2021060130001](https://openairdocs.org/sdr/SIMA2021060130001.md): Power Supply · inoperative · Jun 30, 2021 · N251NN · Emb ERJ170200LR · Emergency Lighting > TWO EMERGENCY CEILING LIGHTS INOP-C/A-FOUND 2 EMERGENCY CEILING LIGHTS INOP. RAR POWER SUPPLY. IAW AMM 33-50-01. NO FURTHER DEFECTS NOTED. - [SDR SIMA20210511002](https://openairdocs.org/sdr/SIMA20210511002.md): Light · not reported · May 11, 2021 · N251NN · Emb ERJ170200LR · Emergency Lighting > EMERGENCY PHOTOLUMINESCENT STRIP NEEDS TO BE REPLACED BY SEAT 1FD-C/A-RAR EMERGENCY PHOTOLUMINESCENT STRIP IAW AMM 33-50-21. NO FUTHER DEFECTS NOTED - [SDR SIMA202009076002](https://openairdocs.org/sdr/SIMA202009076002.md): Sign · inoperative · Sep 6, 2020 · N251NN · Emb ERJ170200LR · Emergency Lighting > AFT EMERGENCY EXIT LOCATOR SIGN INOPERABLE. C/A REMOVED AND REPLACED AFT EXIT LOCATOR LIGHT ASSEMBLY IAW EMB 175 AMM 33-50-19. DID NOT FIX. SEE ITEM 2 THIS NRWC. - [SDR SIMA202008031001](https://openairdocs.org/sdr/SIMA202008031001.md): Battery Pack · discharged · Aug 1, 2020 · N251NN · Emb ERJ170200LR · Emergency Lighting > EMERGENCY EXIT LIGHT INOPERATIVE. PERFORMED EMERGENCY LIGHT POWER UNIT CHARGE IAW AMM 33-50-01 OPERATIONAL TEST OF THE EMERGENCY LIGHTING OK REF. 33-50-00. - [SDR SIMA201911276004](https://openairdocs.org/sdr/SIMA201911276004.md): Light · inoperative · Nov 26, 2019 · N251NN · Emb ERJ170200LR · Emergency Lighting > RH FWD FLOOR PROXIMITY LIGHT STRIP DOES NOT FULLY ILLUMINATE.-C/A-REMOVED AND REPLACED RH FWD FLOOR PROXIMITY LIGHT STRIP IAW EMB 175 AMM 33-50-21. - [SDR SIMA2019112911006](https://openairdocs.org/sdr/SIMA2019112911006.md): Attach Fitting · cracked · Nov 11, 2019 · N251NN · Emb ERJ170200LR · Wing, Attach Fittings > LH WINGTIP IS CRACKED SPAR I ATTACHMENT FITTING. INSIDE 551AB-C/A-REMOVED AND REPLACED LH WINGTIP SPAR 1 ATTACHMENT FITTING IAW ENVOY ERS-EJ-57MR-1151 PART A - [SDR SIMA2019112911005](https://openairdocs.org/sdr/SIMA2019112911005.md): Attach Fitting · cracked · Nov 11, 2019 · N251NN · Emb ERJ170200LR · Wing, Attach Fittings > RH WINGTIP IS CRACKED SPAR I ATTACHMENT FITTING INSIDE PANEL 651AB-C/A-REMOVED AND REPLACED R/H WINGTIP SPAR1 ATTACHMENT FITTING IAW ENVOY ERS-EJ-57MR-1151 PART B. - [SDR SIMA201908065002](https://openairdocs.org/sdr/SIMA201908065002.md): Light · out of adjust · Aug 5, 2019 · N251NN · Emb ERJ170200LR · Landing Gear Position and Warning > FOUND RT LANDING LIGHT INOPERATIVE. ADJUSTED THE RT LANDING LIGHT IAW AMM 33-41-00. OPS CHECKED GOOD. NO FURTHER DEFECT NOTED. - [SDR SIMA20190527003](https://openairdocs.org/sdr/SIMA20190527003.md): Warning System · false activation · May 27, 2019 · N251NN · Emb ERJ170200LR · Fire Bottle, Fixed > EICAS MSG "ENG 1 AND 2 FIREXBTL A FAIL" INTERMITANTLY DURING CLIMB, EXTINGUISHED AFTER LEVEL OFF AND DIDNT COME BACK ON. C/A-PERFORMED FIM TASK 26-21-00-810-809A. FOUND TO BE A TRANSITORY CONDITION OF THE GENERIC I/O MODULE 3. OK FOR SERVICE. - [SDR SIMA20180102002](https://openairdocs.org/sdr/SIMA20180102002.md): Sensor · failed · Jan 2, 2018 · N251NN · Emb ERJ170200LR · Control Column Section > ELEVATOR FEELS LIKE IT`S GRINDING FROM HALF NOSE DOWN TO FULL NOSE DOWN. SMOOTH ON NOSE UP. ONLY ON CAPTAIN`S SIDE. FOUND THE CONTROL COLUMN COMMAND POSITION SENSOR TO BE MAKING GRINDING NOISE AND VIBRATION. REMOVED AND REPLACED THE CONTROL COLUMN COMAND PO - [SDR SIMA20171012001](https://openairdocs.org/sdr/SIMA20171012001.md): Tire · failed · Oct 12, 2017 · N251NN · Emb ERJ170200LR · Tire > BLOWN TIRE, LEFT SIDE, OUTBOARD WHILE TAXIING IN. REMOVED AND REPLACED THE NR 1 MLG TIRE. ## 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 = 'N251NN' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N251NN/reports --- 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.