AD 69-11-01

69-11-01 SWEARINGEN : Amdt. 39-767. Applies to Model SA26-T, S/N T26-2 through S/N T26-99, and Model SA26-AT, S/N T26-100 through S/N T26-142.

Compliance required as indicated.

To prevent failures of cockpit side windows, P/N 26-21288-1 and P/N 26-21288-2, accomplish the following:

(1) After the effective date of this AD:

(a) Operate aircraft with cabin pressure differential not in excess of 5.0 psi.

(b) Prior to the first flight, install placard in full view of pilot calling out maximum allowable cabin pressure differential of 5.0 psi.

(c) Prior to each flight, inspect cockpit side windows for cracks, with particular attention to all edges and corners.

(2) If any crack is found, airplanes may be operated unpressurized only.

(3) Upon installation of new cockpit side windows, P/N 26-21383-5 and -6, in accordancewith Swearingen Aircraft Service Bulletin No. 26-68 dated April 28, 1969, or later FAA-approved revision or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Flight Standards Division, Southwest Region, FAA, the 5.0 psi limiting placard may be removed and the requirements of this AD discontinued.

This amendment becomes effective May 26, 1969.