| 77-8-2 |
Piper |
Revised 11/77 | modify elec connection between microphones | PA-31 series |
| 77-8-1 |
Piper |
100-hr inspect or replace aileron hinge bracket | PA-24,-30,-39 |
| 77-7-9 |
Falcon |
Replace tailpipe before 900 hrs | 10 |
| 77-7-8 |
Hiller |
Inspect tail rotor torsion bars | FH-1100 |
| 77-7-7 |
Lyc Eng |
Revised 2/79 | modify oil filter | O-320-H2AD (L-101-76 thru L-1049-76) |
| 77-7-6 |
Beech |
Inspect rudder cable | C90 (SN LJ-640 thru -716), E90 (LW-120 thru -223) |
| 77-7-5 |
Hiller |
Superseded by 97-10-16 |
| 77-7-4 |
Gulfstream |
Replace "A" carb heat valve | AA-5 (SN 641 thru 834), AA-5A (SN 1 thru 321) |
| 77-7-3 |
Piper |
Replace spacer bushing in elec terminal | PA-31,-325,-350 |
| 77-7-2 |
Falcon |
Rework horizontal stab trim per SB 568 | all Fan Jet Falcons |
| 77-7-1 |
Hughes |
Check belt drive clutch | 269 series |
| 77-6-5 |
Cessna |
Repair oxygen sys per SL ME77-3 | 340A (SN 340A0040 thru -0230) |
| 77-6-4 |
Enstrom |
Replace tail rotor assembly | F28C (SN 364 thru 374), 280C (SN 1007 thru 1065) |
| 77-6-2 |
Cessna |
Superseded by 78-7-1 |
| 77-6-1 |
Mooney |
Rework static system | M20J (SN 24-0001 thru -0102) |
| 77-5-4 |
Cont Eng |
Detailed check to prevent crankshaft failure | see AD for specific SNs on engs |
| 77-5-3 |
Hughes |
Install tail rotor boot | 369D (SN 0003 thru 0049) |
| 77-5-2 |
Bell |
Replace -23,-29 main rotor blades at 1500 hrs | 212 |
| 77-5-1 |
Beech |
Revised 12/87 | supersedes 75-27-10 & 70-23-6 | x-ray spar and cap | all 99s |
| 77-4-8 |
Swearingen |
Inspect or repair spar brackets every 100 hrs | SA26-T,-AT |
