# Service difficulty reports: N639NN A list on [N639NN](https://openairdocs.org/aircraft/N639NN.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR VNAA2026042216601](https://openairdocs.org/sdr/VNAA2026042216601.md): Steering Sys · out of adjust · Apr 20, 2026 · N639NN · Cndair CL6002D24 · Landing Gear Steering System > STEERING INOP CAUTION AT GEAR RETRACTION. / PERFORMED ADJUSTMENT OF THE NOSEWHEEL STEERING IAW 900 AMM 32-51-00-820-801 A01. OPS CHECK GOOD AT THIS TIME. - [SDR VNAA2025081311101](https://openairdocs.org/sdr/VNAA2025081311101.md): Sensor · faulted · Aug 9, 2025 · N639NN · Cndair CL6002D24 · Elevator Control System > ELEVATOR SPLIT CAUTION MSG AND CAS MIS COMP STATUS MSG. REMOVED & REPLACED LH ELEVATOR POSITION SENSOR IAW CRJ 900 AMM 27-34-10-000/400-801-A02; OPS CHECK GOOD. - [SDR VNAA2025073111103](https://openairdocs.org/sdr/VNAA2025073111103.md): Elevator System · no discrepancy · Jul 27, 2025 · N639NN · Cndair CL6002D24 · Elevator Control System > ELEVATOR SPLIT CAUTION MSG IN CRUISE FLIGHT AT FL360. VERIFIED ELEVATOR CABLE TENSIONS THROUGHOUT FUSELAGE PER AMM 27-31-00-750-801 CABLE TENSIONS WITHIN LIMS. VISUALLY INSPECTED ELEVATOR CONTROL COMPONENTS PER FIM 27-31-00-810-803. PER AMM 27-31-00-70-80 - [SDR VNAA2025090300013](https://openairdocs.org/sdr/VNAA2025090300013.md): Panel · damaged · May 9, 2025 · N639NN · Cndair CL6002D24 · Wing, Plate/Skin > FOUND ENLONGATED HOLE ON LEADING EDGE PANEL [522BL] REQUIRES FURTHUR EVALUATION CORRECTIVE ACTION: REPAIRED PANEL 522BL IAW MHIRJ REO 690-57-42-465 REV-- DATED 2025-01-31. - [SDR VNAA2025090300012](https://openairdocs.org/sdr/VNAA2025090300012.md): Stop Fitting · cracked · May 9, 2025 · N639NN · Cndair CL6002D24 · Fuselage Main, Structure > LH AFT EMERGENCY EXIT DOOR, UPPER AFT DOOR STOP IS CRACKED. CORRECTIVE ACTION: REPAIRED EMERGENCY EXIT DOOR IAW MHIRJ REO 670-52-21-103 REV-- DATED 2024-11-06. - [SDR VNAA2025090300011](https://openairdocs.org/sdr/VNAA2025090300011.md): Skin · dented · May 9, 2025 · N639NN · Cndair CL6002D24 · Rudder, Plate/Skin > FOUND EXISTING DENT ON RH SIDE SKIN OF RUDDER BETWEEN STA 125.44 AND STA 119.71 APPROX 7" FWD OF TE CORRECTIVE ACTION: REPAIRED IAW CRJ 900 SRM 55-41-01-201-001-A01. WORK PERFORMED UNDER MHIRJ BARCODE HN00223044. - [SDR VNAA2025090300010](https://openairdocs.org/sdr/VNAA2025090300010.md): Track · corroded · May 9, 2025 · N639NN · Cndair CL6002D24 · Leading Edge Devices > AREA OF CORROSION AROUND (1) EACH CHERRY BUTTON RIVET HEAD AT THE BASE OF R/H TRACK 1-3 MARKED WITH RED. CORRECTIVE ACTION: REPAIRED IAW MHIRJ REO 690-57-42-1162, REV-A DATE 2025-2-24. - [SDR VNAA202509030009](https://openairdocs.org/sdr/VNAA202509030009.md): Track · corroded · May 9, 2025 · N639NN · Cndair CL6002D24 · Leading Edge Devices > AREA OF CORROSION AROUND (1) EACH CHERRY BUTTON RIVET HEAD AT THE BASE OF R/H TRACK 1-1 MARKED WITH RED. CORRECTIVE ACTION: REPAIRED IAW MHIRJ REO 690-57-42-1162, REV-A DATE 2025-2-24. - [SDR VNAA202509030008](https://openairdocs.org/sdr/VNAA202509030008.md): Intercostal · dented · May 9, 2025 · N639NN · Cndair CL6002D24 · Passenger/Crew Doors > PAX DOOR AFT DD1 INTERCOSTAL IS DENTED AND CRACK AND REQUIRES REPLACEMENT. CORRECTIVE ACTION: REMOVED CRACKED AND DENTED PAX DOOR AFT DD1 INTERCOSTAL IAW CRJ 900 SRM 51-42-06-001-001-A01. LOCATED AND DRILLED NEW SERVICEABLE PAX DOOR AFT DD1 INTERCOSTAL IAW CRJ - [SDR VNAA202509030007](https://openairdocs.org/sdr/VNAA202509030007.md): Floor Support · corroded · May 9, 2025 · N639NN · Cndair CL6002D24 · Fuselage Miscellaneous Structure > LBL 27 FLOOR BEAM BETWEEN FS 1015 AND F.S 1047 HAS CORROSION ON UPPER SURFACE. CORRECTIVE ACTION: COMPLIED WITH REPAIR OF LBL 27 FLOOR BEAM CORROSION REPAIR BETWEEN FS 1015 AND F.S 1047 IAW CRJ-900 SRM 53-00-41-201-001-A03. - [SDR VNAA202509030006](https://openairdocs.org/sdr/VNAA202509030006.md): Door Sill · corroded · May 9, 2025 · N639NN · Cndair CL6002D24 · Fuselage Main, Structure > AFT CARGO DOOR SILL IS CORRODED FROM FS 1000 TO FS 1047. CORRECTIVE ACTION: REMOVED CORRODED DOOR SILL. REPLACED AFT CARGO DOOR SILL P/N MM670-35655-003 WITH NEW BETWEEN FS 1000 TO FS 1047 IAW CRJ 900 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01 - [SDR VNAA202509030005](https://openairdocs.org/sdr/VNAA202509030005.md): Intercostal · dented · May 9, 2025 · N639NN · Cndair CL6002D24 · Passenger/Crew Doors > PAX DOOR AFT DD1 INTERCOSTAL IS DENTED AND CRACK AND REQUIRES REPLACEMENT. CORRECTIVE ACTION: REMOVED CRACKED AND DENTED PAX DOOR AFT DD1 INTERCOSTAL IAW CRJ 900 SRM 51-42-06-001-001-A01. LOCATED AND DRILLED NEW SERVICEABLE PAX DOOR AFT DD1 INTERCOSTAL IAW CRJ - [SDR VNAA202509030004](https://openairdocs.org/sdr/VNAA202509030004.md): Intercostal · dented · May 9, 2025 · N639NN · Cndair CL6002D24 · Passenger/Crew Doors > PAX DOOR FWD DD1 INTERCOSTAL DENTED AND REQUIRES REPLACEMENT. CORRECTIVE ACTION: REMOVED DENTED PAX DOOR AFT DD1 INTERCOSTAL IAW CRJ 900 SRM 51-42-06-001-001-A01. LOCATED AND DRILLED NEW SERVICEABLE PAX DOOR AFT DD1 INTERCOSTAL IAW CRJ 900 SRM 51-40-11-001-001 - [SDR VNAA202509030003](https://openairdocs.org/sdr/VNAA202509030003.md): Frame · corroded · May 9, 2025 · N639NN · Cndair CL6002D24 · Fuselage Main, Frame > FS 310 FRAME LOWER FLANGE IS CORRODED BETWEEN 26L AND 26R. CORRECTIVE ACTION: COMPLIED WITH CRJ 900 SRM 51-21-06-101-002-A04 AT FS 310 LOWER FLANGE BETWEEN STRINGERS 26L TO 26R. REPAIR ACTIONS DOCUMENTED ON MHIRJ BARCODE HN00217378 - [SDR VNAA202509030002](https://openairdocs.org/sdr/VNAA202509030002.md): Stiffener · bent · May 9, 2025 · N639NN · Cndair CL6002D24 · Fuselage Miscellaneous Structure > AT FS 280,00 LBL 9.0 WL 97.80 STIFFENER CC670-34138-1 IS BENT AT COCKPIT DOOR ENTRANCE. CORRECTIVE ACTION:. REMOVED AND REPLACED STIFFENER ANGLE IAW CRJ-900 SRM 51-42-06-001-001-A01 AND 51-40-11-001-001-A01. - [SDR VNAA202509030001](https://openairdocs.org/sdr/VNAA202509030001.md): Track · corroded · May 9, 2025 · N639NN · Cndair CL6002D24 · Cargo Compartments > FWD CARGO RETRIEVAL SYSTEM TRACK PN: BA690-30002-43 HAS CORROSION. CORRECTIVE ACTION:. REMOVED AND REPLACED FWD CARGO RETRIEVAL SYSTEM TRACK P/N 500171 (BA690-30002-43) WITH NEW TRACK IAW CRJ 900 AMM 25-51-02-400-802-A06. REF MHIRJ BARCODE HR522518 AND HN2152 ## 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 = 'N639NN' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N639NN/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.