(FORTUNE Magazine) – After 75,000 flights, replace the following: flap track attach bolts, fuselage lap joint rivets . . . Sounds a little like the service manual you get with a new car. But these are among the 150 aircraft parts that an industry task force has identified as potentially faulty over time. Since deregulation, the airlines and plane manufacturers -- Boeing prominent among them -- have shouldered more of the Federal Aviation Administration's role as watchdog for safety. When a section of the roof blew off an Aloha Airlines Boeing 737 near Hawaii last summer, the industry increased the urgency it attached to the problem of aging aircraft. After poring through 700 Boeing service bulletins, the task force compiled the list of 150 parts that need replacing. It will be presented to the FAA by March 31. Almost all are related to metal fatigue, stress fractures, or corrosion. (See table for a sampling of such parts on 737s.) Though the recent United Air Lines 747 disaster is still under investigation, some of the mechanisms on the cargo door suspected of causing the accident are already subject to FAA replacement requirements. Task force reports on aircraft made by McDonnell Douglas, Lockheed, and foreign manufacturers are pending. Boeing CEO Frank Shrontz is famed for his devotion to detail, but admits to not paying much attention to how he dresses. ''That's pretty characteristic of Boeing people,'' he once explained. ''We try to work on the fundamentals.'' The most important fundamental: safety.

BOX: WHERE PLANES WEAR OUT

Wing flap bolts Wing slat bolts Landing gear link bolts Landing gear torsion pins Pilots' window posts Fuselage lap joint rivets Fuselage support ties Underbelly bay door pins