Examine the opening for cracks that start at its corners.

In some cases, wires are color coded and these should be indicated on the wiring diagram.

For Handbooks that are not FAA Approved Airplane Flight Manuals, make the following statements.

In an emergency, obey the cabin crew without question.

Relatively simple units may not require description and operation, and/or troubleshooting information.

Make sure that equipment is cleared of this area.

Each page shall bear a page number and date of issue or revision at the bottom.

All revision numbers and dates shall be removed from pages.

The flight crew can use the flight director commands to control the attitude of the airplane.

The cover, when down, is a guard for the switch in the ON position.

Controls in the flight compartment permit selection of temperature and flow rates.