TBO Extension clarification, please!
I've got a Rotax 912UL here, and the owner wants to do what's required to increase the TBO from 1500 to 2000 hours.
Engine serial number is 4408210. Crankcase part number 888368. Crank Case Serial Number 06.2134
According to SB-912-057UL, paragraph 3.4.1, "Replacement of a crankcase part no. 888364 (to S/N 27.811) through part no. 888368 or part no. 892654 (from S/N 06.0010) is required for TBO extension.
Following Engines are affected:
-912 UL From S/N 4,404718 to S/N 4.407859"
:angry: :angry: :angry:
This document is lousy with typos and bad grammar. This is a document describing the maintenance of an airplane engine; ambiguity here can cause errors in maintenance, errors in maintenance can kill pilots. As a repairman and pilot, I can tell you I don't want to kill or be killed because Rotax can't pony up the dough to have their $#&@ documents proofread by a native English speaker. The sentence describing whether or not I've got to REPLACE A CRANKCASE is completely incomprehensible. Maybe these documents SHOULD be issued by the FAA, then at least we'll get it from someone who can write in our own blankety-blanking language.
:angry: :angry: :angry:
The engine serial number isn't among those effected, but the crankcase part/serial numbers...might be? I can't make sense of it.