B767 Undifferentiated or Other Model
Maintenance Airframe; Maintenance Powerplant
Communication Breakdown; Confusion; Situational Awareness
Aircraft Equipment Problem Critical
General Maintenance Action
Aircraft; Manuals; Human Factors; Company Policy; Chart Or Publication
I am filing this report as an informational item. An Aircraft Maintenance Technician (AMT) was assigned to change an oxygen (O2) bottle on a B767 aircraft on Overnight Maintenance. He went to the Illustrated Parts Catalog (IPC) and O2 BOTTLE XX12 was listed as a replacement bottle. The AMT then returned the bottle to Stores; at which time he was told that BOTTLE XX12 was a B737 [NextGen] aircraft only use bottle; per Maintenance Control. The AMT stated he used the IPC and the replacement bottle was the proper Company Part Number (CPN). Maintenance Control needs to be corrected to show either it can be used on B767's and; or; make the BOTTLE XX12 a B737 aircraft only bottle.
Reporter stated his Air Carrier had three different Part Numbers (P/N) for oxygen (O2) bottles used on their B767 aircraft. The replacement O2 bottle installed by the Technician was the first number showing on their Illustrated Parts Catalog (IPC) list as 'Effective' for a replacement bottle on their B767s. However; the replacement O2 Bottle is a carbon composite type oxygen bottle; also used on their NextGen B737s; is six inches shorter than the original B767 steel O2 bottles and the cylinder mounts for the composite bottles are different. Reporter stated they have more steel O2 bottles at their Station than carbon composite O2 bottles; but since the first Part Number (P/N) listed as 'Effective' was the composite bottle; Mechanics have been using them as replacements. Their Engineering Department noted that was not the intent and changed the listing priority of 'Effective' P/Ns in their IPC to have the steel bottles used first; if available.Reporter stated he did not know if the shorter; composite crew O2 bottle had equivalent capacity as the steel type that was the original type bottle installed.
A Line Mechanic reports about the confusion involving replacement of B767 crew oxygen (O2) steel bottles with B737 NextGen carbon composite bottles that are also listed in their Illustrated Parts Catalog (IPC) as 'Effective' replacement bottles.