21.  But the investigation led to discovery of damaged wiring in other older planes, Swaim told a hearing.

22.  Excessive wear on a throttle linkage part has been blamed for more than a dozen crashes or forced landings of older Cessna planes, The Boston Globe reported Wednesday.

23.  He added that the investigation led to discovery of damaged wiring in other older planes.

24.  It said some older planes are to be converted for freight use.

25.  Several of the new airlines use older planes and have been dogged with safety and maintenance problems.

26.  The NTSB has asked the FAA to require airlines to retrofit older planes to meet new fire-resistant standards for cabin materials.

27.  The new technology means that newer, satellite-guided aircraft will go north, freeing existing air lanes for older planes, he said.

28.  Several major airlines increased their orders of new aircraft and kept older planes flying starting late last year to cope with a hoped-for surge in traffic.

29.  The draft report by the commission also urges more detailed inspection of older planes as well as new fees to pay for improved air traffic control.