88-14-07 BOEING: Amendment 39-5966. Applies to Model 737 series airplanes, line numbers 001 through 1425, equipped with non-modular aft lavatories, certificated in any category. \n\n\tCompliance required as indicated, unless previously accomplished. \n\n\tNOTE: "Non-modular" refers to lavatories which are not stand-alone components, and are assembled on the airplane. \n\n\tTo prevent accumulation of combustible materials behind the airplane sidewall, accomplish the following: \n\n\tA.\tWithin 3 months after the effective date of this AD, inspect the area behind the towel and cup dispenser for the presence of a shroud enclosing the dispenser back. \n\n\t\t1.\tIf the dispenser is equipped with a shroud which prevents material from falling behind the lavatory sidewall and is acceptable to the Manager, Seattle Aircraft Certification Office, or an FAA Principal Maintenance Inspector, no further action is required. \n\n\t\t2.\tIf an acceptable existing shroud has not been installed, inspect the area behind the towel and cup dispenser in the aft lavatories and remove all foreign material. Repeat this inspection at intervals not to exceed 3 months, until the requirements of paragraph B., below, are accomplished. \n\n\tB.\tWithin 15 months after the effective date of this amendment, install a shroud behind the towel and cup dispenser in the aft lavatories, which encloses the dispenser back and prevents material from falling behind the sidewall, in a manner approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, or an FAA Principal Maintenance Inspector. \n\n\tC.\tAn alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tNOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Seattle Aircraft Certification Office. \n\n\tD.\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. \n\n\tThis amendment, 39-5966, becomes effective August 11, 1988.