82-10-03 BOEING: Amendment 39-4375. Applies to Boeing Model 727 airplanes, line number 1 through 1612, certificated in all categories. Compliance is required within the next 2500 hours time-in-service from the effective date of this AD, unless already accomplished. To minimize the possibility of cross-connecting the ground spoiler hydraulic tube assemblies, accomplish either one of the following, unless already accomplished: \n\n\tA.\tReplace the ground spoiler hydraulic tube assemblies per figure 1 of Boeing Service Bulletin 727-27-202, Revision 1, dated December 18, 1981, or later revisions approved by the Chief, Seattle Area Aircraft Certification Office, FAA Northwest Mountain Region. \n\n\tB.\tColor code the ground spoiler hydraulic tube assemblies per figure 2 of the same bulletin. \n\n\tAlternate means of compliance with the AD which provide an equivalent level of safety may be used when approved by the Chief, Seattle Area Aircraft Certification Office, FAA Northwest Mountain Region. \n\n\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. \n\n\tThis Amendment becomes effective June 11, 1982.