ASA Aviation Maintenance Technician General Practice Test

In the identification number 91-08-07 R1, what does 91 signify?

1981 1998 1991 2001

Correct Answer:

1991

Explanation:

The first part of that identification number is a date code. In this format, the two digits at the front indicate the year of manufacture or issue. The value 91 corresponds to 1991. The next numbers (08 and 07) are the month and day, August 7, and the trailing R1 shows the revision level. So, 91 signifies the year 1991.

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