| 77-4-7 |
Mitsubishi |
Superseded by 84-25-2 |
| 77-4-6 |
MBB |
Replace main rotor gear box supports each 6800 hrs | BO-105 series |
| 77-4-5 |
Cessna |
Install new seals on carb air intake | 180, 182, 185, 188, A188 |
| 77-4-4 |
Enstrom |
Superseded by 77-20-2 | supersedes 76-18-8 |
| 77-4-2 |
Piper |
Modify tail wheel | PA-36-285 (SN 36-7360001 thru -7660135) |
| 77-4-1 |
Gulfstream |
Modify manual-electric trim sys per SB 162 | 690A (SN 11143 thru 11344) |
| 77-3-8 |
Piper |
Superseded by 93-10-6 | revised 7/78 |
| 77-3-7 |
deHavilland |
Superseded by 77-3-7 |
| 77-3-5 |
Beech |
Dye penetrant inspect main landing gear housing | A23-19,23,24 series |
| 77-3-4 |
Bell |
Trim fuselage splice fitting | 214B,-1 (SN 280001 thru 280011) |
| 77-3-3 |
Piper |
Determine if ADs 74-26-4 & 75-9-10 & 75-26-18 & 76-4-11 are complied |
| 77-3-1 |
Gulfstream |
Inspect wing rivets each 25 hrs; prior to 500 hrs, rework rivet patterns | 690,A,B |
| 77-26-4 |
Piper |
Superseded by 79-1-5 |
| 77-26-3 |
McCauley |
Revised 6/78 | replace actuating pin screws on 3-bld props D3A34C401,402 |
| 77-26-2 |
Piper |
Superseded by 80-18-10 |
| 77-26-1 |
BAe |
Inspect master oxygen supply valves | DH/BH-125 thru 400 series |
| 77-25-5 |
Enstrom |
Install kit 28-121015 | F28C,280C |
| 77-25-3 |
Swearingen |
Superseded by 99-21-5 |
| 77-25-2 |
Rockwell |
Rework eng fire detect. sys | NA-265-70 (SN -1 thru -7), -80 (SN -1 thru -58) |
| 77-25-1 |
Beech |
Superseded by 79-1-2 |
