AD 63-14-02

63-14-02 BOEING: Amdt 581 Part 507 Federal Register July 2, 1963. Applies to All Model 720 Series Aircraft Serial Numbers 17907 through 17917, 18013 Through 19037, 18041 Through 18050, 18057, 18059 Through 18066, 18072 Through 18082, 18086 and 18087, 18154 Through 18167, 18240 through 17917, 18013 Through 18037, 18041, 18351 Through 18353, 18355 and 18356, 18376 Through 18384, 18416 Through 18425, 18451 Through 18455 and 18581.

Compliance required within the next 450 hours' time in service after the effective date of this AD, unless already accomplished.

In order to correct for the presence of any improperly heat-treated main landing gear actuator beam terminal attach bolts, P/N 63-9587-1, accomplish the following:

(a) Conduct a heat-treat check on the attach bolts, P/N 63-9587-1 (two per actuator beam).

(b) Bolts testing within the heat-treat range of 180,000 p.s.i. to 2000,000 p.s.i. are acceptable for further use and may be continued in service provided they are not otherwise defective.

(c) Bolts testing outside the heat-treat range of 180,000 p.s.i. to 200,000 p.s.i. shall be replaced with bolts of proper heat-treat before further flight.

(d) If holes in either the actuator beam or the terminal are damaged during bolt removal, the bolt holes, or the bolts may be reworked in accordance with Boeing Service Bulletin No. 1827, or an FAA equivalent approved method.

(Boeing Service Bulletin No. 1827 covers this same subject.)

This directive effective August 1, 1963.