# Service difficulty reports: N631NN

A list on [N631NN](https://openairdocs.org/aircraft/N631NN.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

- [SDR VNAA2025120411101](https://openairdocs.org/sdr/VNAA2025120411101.md): Bpsu · unserviceable · Dec 3, 2025 · N631NN · Cndair CL6002D24 · Trailing Edge Flap Control System
  > FLAPS FAIL AT 20 DURING APPROACH. REMOVED AND REPLACED LT BPSU UP TO CLOSE OUT 5.C. IAW AMM 27-52-03-000/400-801. ELECTRICAL RIGGING OF FLAP BPSU PASSED. SELF TEST OF SFECUS GOOD, OPS CHECKED GOOD.
- [SDR VNAA20251109002](https://openairdocs.org/sdr/VNAA20251109002.md): Seat Track · corroded · Nov 5, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION ON SEAT RAILS ON STGR 15RH BTW FS 744-917 (5EAS) AT PAX CABIN. CORROSION ON SEAT RAILS ON STGR 15RH BTW FS 744-917 (5EAS) AT PAX CABIN. WAS EVALUATE OUT LIMITS PER CRJ900 SRM 53-41-49-101-001-A02 AND WERE REPLACED PER CRJ900 AMM 53-00-49.
- [SDR VNAA20251109001](https://openairdocs.org/sdr/VNAA20251109001.md): Seat Track · corroded · Nov 5, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION ON SEAT RAILS ON STGR 15LH BTW FS 669.40/FS 902 (5EAS) AT PAX CABIN. CORROSION ON SEAT RAILS ON STGR 15LH BTW FS=669.40/FS=902 (5EAS) AT PASSENGER CABIN. WAS EVALUATE OUT LIMITS PER SRM 53-41-49-101-001-A02 AND WERE REPLACED PER AMM 53-00-49.
- [SDR VNAA20251110002](https://openairdocs.org/sdr/VNAA20251110002.md): Hinge Bracket · corroded · Oct 7, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Door Hinge
  > CORROSION ON HINGE SUPPORTS AT LAVATORY WASTE SERVICE PANEL (196ER). BRACKET ASSY HINGE P/N: CC670-39095-3 WAS CLEANED PER CRJ900 SRM 51-26-00-001-001-A01 AND NO DAMAGE WAS FOUND AND BRACKET ASSY HINGE P/N: CC670-39096-1 DUE TO EXCESSIVE DAMAGE, WAS REPLACED
- [SDR VNAA20251110001](https://openairdocs.org/sdr/VNAA20251110001.md): Floorbeam · cracked · Oct 7, 2025 · N631NN · Bombdr CL6002D15 · Fuselage Main, Floor Beam
  > CRACK ON FLOORBEAM RBL 12.0 BTW FS 221.73 TO FS 229.00 AT FWD FUSELAGE INTERNAL STRUCTURE (FLIGHT COMPARTMENT FLOOR STRUCTURE BELOW WL79.50). FLOORBEAM RBL 12.0 BTW FS 221.73 TO FS 229.00 AT FWD FUSELAGE INTERNAL STRUCTURE (FLIGHT COMPARTMENT FLOOR STRUCTUR
- [SDR VNAA20251109005](https://openairdocs.org/sdr/VNAA20251109005.md): Rib · cracked · Oct 7, 2025 · N631NN · Bombdr CL6002D15 · Wing, Rib/Bulkhead
  > CRACK ON OUTBOARD MACHINED RIB OF WS163.00 TRAILING EDGE AT LH WING. OUTBOARD MACHINED RIB OF WS163.00 TRAILING EDGE AT LH WING WAS REPAIRED PER REO 690-57-51-480 REV -.
- [SDR VNAA20251109004](https://openairdocs.org/sdr/VNAA20251109004.md): Rib · cracked · Oct 6, 2025 · N631NN · Bombdr CL6002D15 · Wing, Rib/Bulkhead
  > CRACK ON OUTBOARD MACHINED RIB OF WS163.00 TRAILING EDGE AT RH WING. ON OUTBOARD MACHINED RIB OF WS163.00 TRAILING EDGE AT RH WING. WAS REPAIRED PER REO 690-57-51-481 REV-.
- [SDR VNAA20251109003](https://openairdocs.org/sdr/VNAA20251109003.md): Angle · corroded · Oct 6, 2025 · N631NN · Bombdr CL6002D15 · Service Doors
  > CORROSION SEVERAL PLACES ON ANGLE MOUNTTING BTW FS=319 TO FS= 379 ON SURROUND STRUCTURE AT GALLEY SERVICE DOOR. CORROSION SEVERAL PLACES ON ANGLE MOUNTTING BTW FS=319 TO FS= 379 ON SURROUND STRUCTURE AT GALLEY SERVICE DOOR DUE TO EXCESSIVE DAMAGE FOUND OUT OF
- [SDR VNAA20251111001](https://openairdocs.org/sdr/VNAA20251111001.md): Seat Track · corroded · Oct 5, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION ON SEAT RAIL ON RBL 9 BTW FS 349-977 (8EAS) AT PAX CABIN. DUE TO NOT ALLOWED DAMAGE ON SEAT RAIL ON RBL 9 BTW FS 349-977 (8EAS) AT PAX CABIN MUST BE REPLACED PER CRJ900 SRM 53-21-49-101-001 A01 PER CRJ900 SRM 53-31-49-101-001-A02 PER CRJ900 SRM 53
- [SDR VNAA20251110011](https://openairdocs.org/sdr/VNAA20251110011.md): Seat Track · corroded · Oct 5, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION ON SEAT RAIL ON LBL 9 BTW FS 373-977 (7EAS) AT PAX CABIN. CORROSION ON SEAT RAILS ON LBL 9 BTW FS 373-977 (7EAS) AT PAX CABIN WAS EVALUATE OUT LIMITS PER CRJ900 SRM 53-21-49-101-001 A01 PER CRJ900 SRM 53-31-49-101-001-A02 PER CRJ900 SRM 53-41-49-
- [SDR VNAA20251110010](https://openairdocs.org/sdr/VNAA20251110010.md): Seat Track · corroded · Oct 5, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION ON SEAT RAIL ON LBL 27 BTW FS 364-480 (1EA) AT PAX CABIN. DUE TO NOT ALLOWED DAMAGE ON SEAT RAIL ON LBL 27 BTW FS 364-480 (1EA) AT PAX CABIN MUST BE REPLACE PER CRJ900 SRM 53-21-49-101-001-A01 FIG 53-21-49-991-804 AND SEAT RAIL ON BTWS LBL 27 BTW F
- [SDR VNAA20251110009](https://openairdocs.org/sdr/VNAA20251110009.md): Rib · cracked · Oct 5, 2025 · N631NN · Bombdr CL6002D15 · Wing, Rib/Bulkhead
  > CRACK ON RIB LEADING EDGE SS57.16 AT LH WING. RIB LEADING EDGE SS57.16 AT LH WING WAS REPLACED PER CRJ900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND SRM 51-42-10-001-001-A01
- [SDR VNAA20251110006](https://openairdocs.org/sdr/VNAA20251110006.md): Seat Track · corroded · Oct 5, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION ON SEAT RAILS ON STGR 15RH BTW FS 379-720 (3EAS) AT PAX CABIN. CORROSION ON SEAT RAILS ON STGR 15LH BTW FS= 379-720 (3EA'S) AT PASSENGER CABIN WERE EVALUATE OUT LIMITS PER CRJ-900 SRM 53-41-49-101-001-A02 AND WERE REPLACED PER AMM 53-00-49-400-801.
- [SDR VNAA20251110005](https://openairdocs.org/sdr/VNAA20251110005.md): Seat Track · corroded · Oct 5, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION ON SEAT RAILS ON STGR 15LH BTW FS 379-575 (2EAS) AT PAX CABIN. SEAT RAILS STGR 15LH BTW FS= 379-575 (2EA'S) AT PASSENGER CABIN WERE FOUND OUT OF LIMITS PER CRJ-900 SRM 53-41-49-101-001-A01 THEREFORE WERE REPLACED PER CRJ900 AMM 53-00-49 (CONFIG. A12
- [SDR VNAA20251111006](https://openairdocs.org/sdr/VNAA20251111006.md): Fairing · damaged · Oct 4, 2025 · N631NN · Bombdr CL6002D15 · Nacelle/Pylon, Main Frame
  > 1075FH PERM REPAIR - SPEED TAPE APPLIED - RH PYLON TRAILING EDGE FAIRING LOWER PANEL DAMAGE WITHIN 1075 FLIGHT HOURS AFTER SECTION I, ACCOMPLISH A PERMANENT REPAIR AT DISCREPANT AREA IN ACCORDANCE WITH APPROVED PROCEDURES OR REPLACE PART. RH PYLON TRAILING E
- [SDR VNAA20251111005](https://openairdocs.org/sdr/VNAA20251111005.md): Web · dented · Oct 4, 2025 · N631NN · Bombdr CL6002D15 · Fuselage Miscellaneous Structure
  > CRACK ON UPPER WEB OF ADG COMPARTMENT BELOW OF SETTLEMENT AREA OF ADG PUMP. CRACK ON UPPER WEB OF ADG COMPARTMENT BELOW OF SETTLEMENT AREA OF ADG PUMP WAS REPAIRED PER CRJ900 SRM 53-11-43-201-001-A01
- [SDR VNAA20251110008](https://openairdocs.org/sdr/VNAA20251110008.md): Intercostal · corroded · Oct 4, 2025 · N631NN · Bombdr CL6002D15 · Fuselage Miscellaneous Structure
  > CORROSION ON INTERCOSTALS (3 EAS) IN STA. FS= 349 TO FS= 364 NEAR STGR 27 AT MAIN AVIONICS COMPARTMENT. CORROSION ON INTERCOSTAL STGR 26 RH AND FS 364.00 TO FS 349.00 WAS REMOVED PER CRJ 900 SRM 51-21-06-001-001-A01 EVALUATE WITHIN OF LIMITS PER CRJ900 SRM 5
- [SDR VNAA20251110007](https://openairdocs.org/sdr/VNAA20251110007.md): Hinge · damaged · Oct 4, 2025 · N631NN · Bombdr CL6002D15 · Fuselage, Door Hinge
  > DISCREPANCY:IN REF TO TRFKE00EQGHW. PERM REPAIR - PASSENGER DOOR SURROUND STRUCTURE - HINGE REPLACEMENT REPLACE THE PASSENGER DOOR HINGE IN ACCORDANCE WITH CRJ900 SRM TASK 53-21-23-201-007-A01. // ENGINEERING COMMENTS: THIS IS A PERMANENT REPAIR, HINGE REPLACE
- [SDR VNAA20251111004](https://openairdocs.org/sdr/VNAA20251111004.md): Skin · dented · Oct 1, 2025 · N631NN · Bombdr CL6002D15 · Nacelle/Pylon, Plate/Skin
  > DENT ON UPPER FORWARD CORE COWL OF RH ENGINE. DENT ON UPPER FORWARD CORE COWL OF RH ENGINE WAS REPAIRED PER REO 690-54-23-515 REV --
- [SDR VNAA20251111003](https://openairdocs.org/sdr/VNAA20251111003.md): Door · worn · Oct 1, 2025 · N631NN · Bombdr CL6002D15 · Cargo/Baggage Doors
  > WEAR ON ARM GUIDE SEVERAL PLACES ON FWD AND AFT SIDES OF FWD AND MIDDLE BAGGAGE BAY DOORS. ARM GUIDE SEVERAL PLACES ON FWD AND AFT SIDES OF FWD AND MIDDLE BAGGAGE BAY DOORS WAS REPAIRED PER REO 690-52-35-600 REV -- AND PER REO 690-52-35-599 REV. -- AND PER
- [SDR VNAA20251111002](https://openairdocs.org/sdr/VNAA20251111002.md): Skin · nicked · Oct 1, 2025 · N631NN · Bombdr CL6002D15 · Trailing Edge Flaps
  > SEVERAL NICKS ON LOWER SKIN OF LH INBOARD FLAP FLS 15.00 TO FLS 65.5 AT LH WING. NICKS ON LOWER SKIN OF LT INBOARD FLAP FLS 48.00 TO FLS 65.5 AT LH WING WERE BLEND OUT PER SRM 51-12-00-001-001-A01 AND EVALUATED WITHIN OF LIMITS PER SRM 57-52-01-101-001-A01 A
- [SDR VNAA20251110003](https://openairdocs.org/sdr/VNAA20251110003.md): Lug · corroded · Sep 26, 2025 · N631NN · Bombdr CL6002D15 · Ailerons
  > CORROSION WAS FOUND ON INNER SIDE ON LUGS R1, R2, R3, R4, R5, R6 AND HINGE 1 AT RH AILERON. LUGS R1, R2, R3, R4 AND HINGE 1 AT RH AILERON WERE CLEANED PER CRJ 900 SRM 51-26-00-001-001-A01 PAR. 3 C D AND NOT DAMAGE WAS FOUND & LUGS R5 AND R6 AT RH AILERON WER
- [SDR VNAA20251110004](https://openairdocs.org/sdr/VNAA20251110004.md): Hinge Fitting · corroded · Sep 25, 2025 · N631NN · Bombdr CL6002D15 · Ailerons
  > CORROSION ON LUG BORE OF L1, L2, L3, L5 AND L6 OF CENTER HINGE FITTINGS AND OUTB HINGE FITTINGS UPPR/LWR OF LEFT AILERON. LUGS WERE CLEANED PER CRJ-900: SRM: 51-26-00-001-001-A01 AND REPAIRED PER REO: 670-57-61-237 REV - AND PER REO 690-57-61-454 REV -.
- [SDR VNAA2025050211101](https://openairdocs.org/sdr/VNAA2025050211101.md): Computer · malfunctioned · May 1, 2025 · N631NN · Cndair CL6002D24 · Central Warning
  > XFLOW PUMP CAUTION MSG IN FLIGHT PERFORMED QRH PROCEDURE INBALANCE REACHED APPROX 1200 - 1400 LBS / INTERROGATED MDC AND FOUND B1: 006805. T/S B1 IAW CRJ900 FIM 28-41-22-810-802-A01-PSA. REMOVED AND REPLACED FQGC IAW CRJ900 AMM 28-41-22-000/400-801. OPS CHECK
- [SDR VNAA2024100111102](https://openairdocs.org/sdr/VNAA2024100111102.md): Condenser · failed · Sep 28, 2024 · N631NN · Cndair CL6002D24 · Cabin Cooling System
  > LEFT BLEED WARNING/ CAUTION MSG WITH L PACK AUTO SHUTDOWN. LOSS OF PRESSURIZATION. / REMOVED AND REPLACED THE LH PRECOOLER IAW CRJ 900 AMM 21-53-04-000/400-801-A05. REMOVED AND REPLACED THE RH CONDENSER/REHEATER IAW CRJ900 AMM 21-51-14-000/400-801(A01). PERFOR
- [SDR VNAA2024100111101](https://openairdocs.org/sdr/VNAA2024100111101.md): Acm · unserviceable · Sep 28, 2024 · N631NN · Cndair CL6002D24 · Cabin Cooling System
  > BURNING ODOR DURING FLIGHT POSSIBLY ASSOCIATED WITH LEFT PACK AUTO SHUTDOWN. RETURNED ON GROUND WITH L PACK ON WITH APU MOMENTARILY. / FOUND LEFT PACK ACM BAD. REMOVED AND REPLACED ACM IAW CRJ 900 AMM 21-51-08-000/400-801-A01.
- [SDR VNAA2024043011101](https://openairdocs.org/sdr/VNAA2024043011101.md): Warning Message · false activation · Apr 12, 2024 · N631NN · Cndair CL6002D24 · Drag Control System
  > OB SPOILERONS AND OB FLT SPLILERS CAUTION MSG IN FLIGHT / RESET SYSTEM CIRCUIT BREAKERS. FAULT DID NOT REOCCUR, MIPM RESET SUCCESSFUL.

## 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 = 'N631NN' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N631NN/reports

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