| AD Number | 75-12-10 | Status | Active |
| Effective Date | June 11, 1975 | Issue Date | May 27, 1975 |
| Docket Number | Unknown | Amendment | 39-2232 |
| Product Type | ["Appliance"] | Product Subtype | Not specified |
| CFR Part | --- - Part 39 | CFR Section | --- - _EMPTY_ |
| Citation | This information is not available. | ||
| Manufacturer(s) | M7 Aerospace LLC Twin Commander Aircraft LLC Viking Air Limited Textron Aviation Inc. |
| Model(s) | 60 95-C55 95-C55A A36 A60 B60 D55 D55A E55 E55A SA226-AT SA226-TC PA-31-325 PA-31-350 500-S 690A DHC-6-1 DHC-6-100 DHC-6-200 DHC-6-300 |
75-12-10 COLLINS: Amendment 39-2232. Applies to Collins AP106 Autopilots which may be installed on Aero Commander Models 500S and 690A; Beech Models 60, A60, B60, 95-C55, 95-C55A, D55, D55A, E55, E55A and A36; DeHavilland Model DHC-6; Piper Models PA 31-350 and PA 31-325; and Swearingen Models SA 226-AT and SA 226-TC, airplanes.
Compliance: Required as indicated, unless already accomplished.
To prevent failure in multiple servos, accomplish the following:
A. Within the next 10 hours" time in service after the effective date of this AD, check the modification information plate on the 161H-1 programmer (P/N 622-1036-001), which is part of the AP106 Autopilot, to determine if the unit has been modified in accordance with Collins Service Bulletin No. 6, or approved revisions. If so modified, make an appropriate entry in the aircraft records indicating compliance with this AD.
B. If the 161H-1 programmer has not been modified in accordance with Collins Service Bulletin No. 6, or approved revisions, prior to further flight, disable the roll and pitch servo axes by placing a collar over the circuit breakers, if installed, or remove and tie back the connector from the roll and pitch servos, and in either case install a placard in plain view of the pilot which reads: "DO NOT ENGAGE AUTOPILOT" and operate the aircraft in accordance with this limitation.
C. On or before December 1, 1975, modify all the 161H-1 programmers in accordance with Collins Service Bulletin No. 6.
D. Any alternate means of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.
This amendment becomes effective June 11, 1975, to all persons except those to whom it was made effective earlier by air mail letter issued May 15, 1975.