This paragraph should also explain that, in addition to the established inspections, other inspections may be required by Airworthiness Directives.

The recirculation system uses a fan to move air from the passenger compartment to the main distribution manifold. This system reduces the amount of air necessary for the packs to supply.

Gas pressure in the sense tube holds the fault pressure switch in the closed position. The other two pressure switches close when the gas pressure increases because of an overheat or fire condition.

The ventilation system uses differential pressure to pull air out of the airplane. The air moves through overboard vents from the cabin galley and the lavatory areas.

When the entire storage area is full, new fault data, i.e. data for the current flight leg, will replace/overwrite the data for the oldest flight leg in the fault history.

The RESET test switch is used to erase the fault history. Push the RESET switch while the VERIFY and the green GO lights are on.

Outlets along the side walls and the center of the ceiling divide the air for symmetrical supply.

L1 entry door number 1 floor panel has a 1-inch notch 6 inches from the forward right edge.

If you use too much paint, the finish will be unsatisfactory.

Make sure that there are safety barriers around the engine exhaust area.

If the oil leakage is more than five drops a minute, examine the sealant.