| |
|
| in air| | test switch |
| | recorder circuit breaker |
|
|
|
|| to prevent unnecessary |
|
|
|
|| operation flight recorder.|| |
|
|
|| Close circuit breaker when|| |
|
|
|| maintenance is completed |
................................................................................| | | |
|
| Air | Opens turbofan || Press and hold | Check that air condition- || |
| |
| condi-| valve when || ground sensing | ing switches are off to| |
| |
| tioning | airplane is on || test switch | prevent overheating air| |
| |
| turbofan | ground| |
| conditioning pack. Keep |
| |
|
|
|
|| hand clear of ram air |
|
|
|
|| inlet defector |
................................................................................| | | |
|
| Elec-| Prevents APU || Press and hold | None| |
| |
| trical| | generator being| || ground sensing |
|
| power| | switched from| || test switch |
|
|
| two busses| |
|
|
|
| (ground condition)| |
|
|
|
| to one bus (air| |
|
|
|
| condition)| |
|
|
................................................................................| | | |
|
| Takeoff | Prevents takeoff || Press and hold | None| |
| |
| warning| | warning horn| || air sensing |
|
|
|
| sounding when | test switch| |
|
|
| airplane is in| |
|
|
|
| air| |
|
|
................................................................................| | | |
|
| Cabin | Maintains cabin || Press and hold | None| |
| |
| pressuri-| pressurization| | || ground sensing |
|
| zation| | when airplane is| || test switch |
|
| control | in air |
|
|
| |
................................................................................| | | |
|
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-00-00
ALL ú
ú 01 Page 9
ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
~..............................................................................
| Air-Ground Sensing Functions |
| Table 1 |
................................................................................
| SYSTEM | SAFETY SENSOR | TO SIMULATE | |
| | FUNCTION | AIRPLANE-IN-AIR | PRECAUTIONS |
................................................................................
| Electri- | Prevents static| | Press and hold| | |
| | Place standby power switch|
| cal | inverter from || ground sensing | in OFF position unless| |
| |
| system | draining battery || test switch | 115-volt ac power is| |
| |
| static| | on ground| |
|
| available and equipment |
| inverter | |
| cooling blower circuit| |
| |
|
|
|
|| breaker are to prevent |
|
|
|
|| overheating static |
|
|
|
|| inverter |
................................................................................| | | |
|
| APU fire | Prevents APU fire| | Press and hold| | None |
| |
| horn| | horn from sounding| | |
