Accepttance from Sikorsky 24 May 63
- BTB-MR 12 Dec 67
- HS-50 26 Apr 68
- BTB-MR 16 Jul 68
- 1105/UACL 7 Aug 68
- BTB-MR 4 Jan 69
- HS-50 20 Jan 69
- BTB-MR 18 Jun 69
- BTB-OR 20 Jan 70
- HS-50 9 Feb 70
- BTB 16 Mar 70
- HS-50 1 Apr 70
- UACL 24 Sep 70
- BTB-MR to HS-50 19 Oct 70
- 20SCFTSD 30 Apr 71
- RWG 14 Jan 72
- IMP (101CFTSD) 30 Mar 73
- RWG 7 MAy 73
- 20SCFTSD 13 Sep 75
- RWG 25 May 76
- IMP 6 Jan 78
- RWG 15 Mar 78
- IMP 18 May 79
- RWG 5 Oct 79
- IMP 7 Jan 81
- AMO 6 Mar 81
- IMP 18 Dec 81
- AMO 10 May 82
- IMP 02 Dec 82
- AMO 10 Mar 83
- IMP 21 Jan 86
- Record missing
- 12 AMS 31 Nov 92
- IMP 21 Nov 95
- 12 AMS 1 Oct 96
- 443 19 Sep 97
- 12 AMS 22 Jul 99
Third Level Inspections
| Installations | Inspection Type / Number | Airframe Hours | Completed |
| Conversion and Refurbsihment | 3358.0 | 17 Sep 75 | |
| Mod Program | 4264.2 | 16 Feb 78 | |
| Ext. Paint | 5491.3 | 30 Apr 82 | |
| DLIR I, Rewire | #1 PER | 7153.9 | 10 Oct 86 |
| DLIR II | #4 PER | 9326.1 | 18 Mar 92 |
| HELTAS Mod CD-460 | 9463.8 | 23 Nov 92 | |
| TLIR III | #4 PER | 10480.1 | 19 Sep 96 |