Operations Saftey notice (Pre-2014) |
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| Number | Date | Status | Subject |
| 47-OSN-INDEX | 03/01/04 | Active | Bell Index |
| 47-75-1 | 12/12/75 | Active | Failed Tail Rotor Hub Bolts P/N 47-641-052-3 |
| 47-77-1 | 08/31/76 | Active | Accomplishment of S.B. 47-77-1 |
| 47-77-2 | 11/01/77 | Active | Breakaway Fuel Vent Valve for Crashworthy Fuel System |
| 47-78-1 | 04/21/78 | Active | Airworthiness of Aircraft Parts |
| 47-78-2 | 09/25/78 | Active | New Tail Rotor Hub and Blades |
| 47-79-1 | 10/19/79 | Active | Tail Rotor Link Assemblies P/N 47-641-172-5 |
| 47-79-2 | 12/04/79 | Active | Replacement and Inspection of 47-642-102 Tail Rotor Blade Assemblies |
| 47-80-3 | 12/04/80 | Active | Retirement of Main Rotor Gimbal Rings P/N 47-120-014-xx |
| 47-82-04 | 06/04/05 | Active | Airworthiness of Fan Drive Gear Sets, P/N 47-620-497-1 |
| 47-84-05 | 05/01/84 | Active | Main Rotor Blade Repair |
| 47-86-6 | 06/02/86 | Active | Accomplishment of A.S.B. 47-85-12, Revision "A" |
| 47-86-7 | 07/18/86 | Active | Accomplishment of Service Bulletins 47-76-6 and 47-78-1 |
| 47-89-8 | 02/22/89 | Active | Airworthiness of Main Rotor Blade Assemblies, P/N 47-110-120-50 |
| 47-09-9 | 12/28/09 | Active | Main Rotor Hub Inboard Thrust Duplex Bearing 047-120-417-xxx, Identification of Thrust Side |
| 47-10-10 | 05/03/10 | Active | Engine-driven Cooling Fan Disk Failures |
