New retirement life = 21,950 hrs - ( 0.3 x hrs accumulated prior to modification )

Note 1: Example 1, an aircraft with 9,000 hours already accumulated without the modification:

New retirement life = 21,950 - (0.3 x 9,000) = 19,250 hours.

Example 2, an aircraft with 11,000 hours already accumulated without the modification:

New retirement life = 21,950 - (0.3 x 11,000) = 18,650 hours.

Note 2: For assistance with incorporating this STC, write to the STC owner, Mr Paul

M. Sterling, 13113 SE 228th Place, Kent, WA, USA, 98031.

2. Initially, at 100 flight hours after installation of the wing spar strap, then every 100 flight hours thereafter.