KLM Fleet Services

Paragraph (g) states: (g) Concurrently with accomplishing the modification required by paragraph (f) of this AD, revise the FAA-approved maintenance program by incorporating the information specified in paragraphs (g)(1) or (g)(2) of this AD, as applicable. (1) For Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747- 200C, 747- 200F, 747-300, 747SR, and 747SP series airplanes: Incorporate AWL No. 28- AWL-20 of Section D of the Boeing 747-100/ 200/300/SP Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), D6- 13747-CMR, Revision January 2007, into the FAA-approved maintenance program. Accomplishing the revision in accordance with a later revision of Document D6-13747- CMR is an acceptable method of compliance if the revision is approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA. (2) For Model 747-400, 747-400D, and 747-400F series airplanes: Incorporate AWL No. 28-AWL-25 of Subsection D of the Boeing 747-400 Maintenance Planning Data (MPD) Document, D621U400-9, Section 9, Revision 24, dated June 2006, into the FAA-approved maintenance program. Accomplishing the revision in accordance with a later revision of the MPD is an acceptable method of compliance if the revision is approved by the Manager, Seattle ACO, FAA. KLM COMMENT: The intention of paragraph (g) is to maintain the design features introduced per Boeing Alert Service Bulletin 747- 28A2291, dated September 27, 2007 when the reserve tank fueling valve controller is removed and replaced. KLM thinks that it is more clear when this paragraph states that CDCCL's into the applicable paragraphs of the Aircraft Maintenance Manuals (AMM) must be incorporated to maintain these design features.