176,033 service difficulty reports for the Bombardier CRJ (all variants) across 43 systems (1995–2026).
Reported systems
| System | ATA | Reports | Share |
|---|---|---|---|
| Fuselage | ATA 53 | 71,704 | 40.7% |
| Lights | ATA 33 | 26,201 | 14.9% |
| Doors | ATA 52 | 19,156 | 10.9% |
| Wings | ATA 57 | 11,740 | 6.7% |
| Flight Controls | ATA 27 | 9,971 | 5.7% |
| Landing Gear | ATA 32 | 7,119 | 4% |
| Equipment & Furnishings | ATA 25 | 5,041 | 2.9% |
| Air Conditioning | ATA 21 | 3,296 | 1.9% |
| Windows | ATA 56 | 1,980 | 1.1% |
| Fire Protection | ATA 26 | 1,839 | 1% |
| Stabilizers | ATA 55 | 1,802 | 1% |
| Engine Exhaust | ATA 78 | 1,578 | 0.9% |
| Engine - Turbine/Turboprop | ATA 72 | 1,455 | 0.8% |
| Nacelles & Pylons | ATA 54 | 1,351 | 0.8% |
| Navigation | ATA 34 | 1,315 | 0.7% |
| Hydraulic Power | ATA 29 | 1,228 | 0.7% |
| Ice & Rain Protection | ATA 30 | 1,081 | 0.6% |
| Auxiliary Power Unit (APU) | ATA 49 | 984 | 0.6% |
| Power Plant | ATA 71 | 875 | 0.5% |
| Electrical Power | ATA 24 | 819 | 0.5% |
| Indicating & Recording | ATA 31 | 704 | 0.4% |
| Placards & Markings | ATA 11 | 648 | 0.4% |
| Pneumatic | ATA 36 | 639 | 0.4% |
| Oxygen | ATA 35 | 600 | 0.3% |
| Fuel | ATA 28 | 597 | 0.3% |
| Auto Flight | ATA 22 | 548 | 0.3% |
| Engine Fuel & Control | ATA 73 | 335 | 0.2% |
| Standard Practices - Structures | ATA 51 | 300 | 0.2% |
| Engine Oil | ATA 79 | 292 | 0.2% |
| Engine Air | ATA 75 | 178 | 0.1% |
| Engine Indicating | ATA 77 | 147 | 0.1% |
| Engine Controls | ATA 76 | 144 | 0.1% |
| Communications | ATA 23 | 122 | 0.1% |
| Other | ATA 14 | 103 | 0.1% |
| Water & Waste | ATA 38 | 48 | 0% |
| Starting | ATA 80 | 48 | 0% |
| Other | ATA 83 | 20 | 0% |
| Ignition | ATA 74 | 17 | 0% |
| Servicing | ATA 12 | 4 | 0% |
| Reciprocating Engine | ATA 85 | 1 | 0% |
| Propellers | ATA 61 | 1 | 0% |
| Other | ATA 37 | 1 | 0% |
| Central Maintenance System | ATA 45 | 1 | 0% |
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).