AD 71-03-03

71-03-03 NORTH AMERICAN ROCKWELL: Amendment 39-1152. Applies to Models NA-265, NA-265-20, NA-265-30, NA-265-40 (Serial Nos. 282-1 thru 282-97), and NA- 265-60 (Serial Nos. 306-1 thru 306-63).

Compliance required within the next 30 days after the effective date of this AD unless already accomplished.

To prevent failure of the outboard flap track attachment lug, accomplish the following:

(a) Inspect the outboard flap track attachment lug of the wing rear spar, P/N's 265- 130004-1, -2, -21, -22, -31, and -32 for evidence of cracking in accordance with steps 1, 2, and 3 contained in North American Rockwell Sabreliner Field Service Bulletin No. 70-11, revised January 26, 1971, or later FAA approved revision.

(b) If the spar lug is not cracked, prior to reassembly, rework the lug radii in accordance with steps 4 and 5 of Service Bulletin 70-11 referenced in (a) above.

(c) If the spar lug area is cracked, before further flight rework the spar lug area in accordancewith steps 6 through 13 of Service Bulletin No. 70-11 referenced in (a) above.

This amendment becomes effective February 6, 1971.