How to Pass Time on a Maintenance Delay: Suggestion #132
2) Select the transmit switch on your ARCDU to "PA," and press the "PA" button.
3) Use tape to hold the push-to-talk switch in the "transmit" position.
4) ROCK OUT!!! Set the volume knob to "11" and turn your mundane maintenance delay into a two hour festival of headbanging, air guitar playing, lipsyncing, regrettable disco moves, and maybe even a polka or two.
Note: It is suggested that you disassemble the above sound system before the aircraft is approached by any VP, chief pilot, or check airman.