| 12-8-18 |
Turbomeca |
Detection of geometric non-conformities on PT blade fir-tree roots | Arriel 2B, 2B1 |
| 12-8-16 |
Bombardier |
Swapped engine fire extinguishers | Lear 60 |
| 12-8-15 |
Bombardier |
Short circuit events during pre-delivery inspections | Challenger 605 |
| 12-8-10 |
Bombardier |
AD regarding air driven generator failing to power essential buses during functional tests | Challenger 604, 605 |
| 12-7-9 |
Turbomeca |
Supersedes 09-14-11 | Arrius 2F turboshaft with P3 air pipe, part number 0319719180, installed ; rubs between the pipe an bulkhead may lead to rupture of P3 pipe | Arrius 2F |
| 12-7-4 |
Cessna |
False cross-feed command to the right-hand fuel control | 680 series |
| 12-6-3 |
Bombardier |
Horizontal stabilizer trim actuator no-back and number 1 motor brake assembly can both fail dromant | Challenger 300 |
| 12-6-21 |
Dassault |
AD to prevent internal fuel leakage with significant fuel vapors | Falcon 900 |
| 12-6-17 |
Rolls-Royce |
Remove the HP turbine spanner retaining nut from the combustion and HP turbine module and install a new HP turbine spanner retaining nut | Tay 611-8, -8C |
| 12-6-1 |
Cessna |
Modify the drain installation of the tailcone stinger on the aft canted bulkhead as specified | 560XL, XLS |
| 12-5-9 |
Mooney |
Supersedes 12-3-52 | Inspect trim fitting, hinge, and filler plate of the tail pitch trim assembly for correct positioning and proper attachment and inspect the Huck Bolt fastners for proper security | M20R, M20TN |
| 12-5-1 |
Eurocopter |
Unsafe condition and deterioration and failure of Starflex arm ends | SA and AS 365 models |
| 12-4-12 |
Bombardier |
Replace the ADG power feeder cable, as specified | Challenger 604 |
| 12-3-7 |
Lycoming |
Applies to all Lycoming reciprocating engines with carburetor part numbers listed | multiple models |
| 12-3-6 |
Lycoming |
Supersedes 11-15-10 | Applies to the Superior Air Parts engine models and Lycoming engines listed with an AVStar Fuel System servo diaphragm with applicable part number | Multiple Engine Models |
| 12-3-52 |
Mooney |
Superseded by 12-5-9 |
| 12-3-5 |
Bombardier |
Deformation at the neck of the pressure regulator body on certain oxygen cylinder and regulator assemblies | Global Express, XRS, Global 5000 |
| 12-3-11 |
Turbomeca |
Supersedes 10-3-6 | Check the transmissible torque between the low-pressure pump impeller and the high-pressure pump shaft of the HP/LP pump metering unit as specified | Arriel 2B, 2b1 |
| 12-3-1 |
Eurocopter |
Fuel main metering valve | EC135 |
| 12-27-2 |
Turbomeca |
Ucommanded in-flight shutdown | Arriel series |
