Preflight Tests

Question 1

Observer Oxygen Mask Test

Answer 1

Audio control panel…………Set

• Push FLIGHT INTERPHONE transmitter selector, FLIGHT INTERPHONE receiver switch and SPEAKER receiver switch.
• Adjust volume on FLIGHT INTERPHONE and SPEAKER receiver switches.

Oxygen panel……..Set

• Oxygen mask – Stowed and doors closed.
• Regulator selector – Rotate to EMERGENCY
• TEST-RESET switch – Push down and hold for 5 seconds.
• Observe yellow cross in oxygen flow indicator and oxygen flow is audible. The test indicator will remain and oxygen flow will be audible until the TEST-RESET button is released.
• Verify that the crew oxygen pressure does not decrease more than 100 PSI.
• TEST-RESET button – Release
• Regulator selector – Rotate to 100%
• TEST-RESET button – Push down and hold
• Ensure the test indicator blinks.
• Ensure the test indicator goes out, showing that the oxygen system is leak free.
• Control wheel Push–To–Talk switch – INT or Audio control panel Push–To–Talk switch – I/C
• Tap on stowage box or mask and verify that tapping is audible in the headset and or speakers. The mask mic will remain active until the TEST-RESET button is released.
• TEST-RESET button and PUSH–TO–TALK switch – Release
• Regulator selector – Leave at 100%

Question 2

Flight Deck Access System Test

Answer 2

• FLIGHT DECK ACCESS SYSTEM switch………..NORMAL
• Switch down, guard down. [AFM]
• Verify the LOCK FAIL light extinguishes.

*With the flight deck door open:
-FLIGHT DECK DOOR rotary switch……AUTO
-Access code…….Enter
-ENT key……..Push
—Verify alert sounds.
—Verify amber keypad LED illuminates.
—Verify AUTO UNLK light illuminates.

• FLIGHT DECK DOOR rotary switch………DENY
• Verify AUTO UNLK light extinguishes.
• FLIGHT DECK DOOR rotary switch……..UNLOCKED
• Push and turn the FLT DK DOOR rotary switch to UNLOCKED position.
• Verify red keypad LED extinguishes.
• Verify green keypad LED illuminates.
• FLIGHT DECK ACCESS SYSTEM switch……….OFF
• Guard up, switch up.
• Verify the LOCK FAIL light illuminates.

Question 3

Flight Recorder

Answer 3

• Flight Recorder……….Test
• FLIGHT RECORDER OFF light – Illuminated
• FLIGHT RECORDER switch – TEST
• FLIGHT RECORDER OFF light – Extinguished
• FLIGHT RECORDER switch – NORMAL

Question 4

GPWS/Windshear

Answer 4

• Ground Proximity SYS TEST switch………Push momentarily
• Verify the following:
• BELOW G/S and GPWS INOP lights illuminate
• TERR FAIL and TERR TEST annunciations show on navigation displays
• PULL UP and WINDSHEAR alerts illuminate
• “GLIDESLOPE,” “PULL UP,” and “WINDSHEAR” aurals sound
• “TERRAIN TERRAIN PULL UP” aural sounds
• terrain display test pattern shows on navigation displays
• TERRAIN caution message shows on navigation displays
• “OBSTACLE OBSTACLE PULL UP” aural sounds

Question 5

Transponder/TCAS

Answer 5

• Transponder………..TEST
• Check FAIL light illuminates.
• Check all code segments illuminate.
• Verify no error codes exist.
• Verify aural indicates TCAS system test passed.
• *TCAS TEST is displayed on the navigation display during the test followed by TCAS TEST PASSED or TCAS TEST FAILED.

Question 6

Window Heat System Tests- Overheat Test

Answer 6

Overheat Test

*WINDOW HEAT switches………..ON

*WINDOW HEAT TEST switch………..OVHT
-OVERHEAT lights – On
-ON lights – Extinguish
Lights extinguish after approximately 1 minute.

• MASTER CAUTION – On
• ANTI–ICE system annunciator – On
• WINDOW HEAT switches………..Reset
• Position the WINDOW HEAT switches OFF, then ON.

Question 7

Window Heat System Tests- Power Test

Answer 7

• WINDOW HEAT switches……….ON
• WINDOW HEAT TEST switch……….PWR
• WINDOW HEAT ON lights………..Illuminated

Question 8

Total Air Temperature (TAT) Test

Answer 8

• Total Air Temperature probe……………..Test
• TEMP PROBE light – Illuminated
• TAT TEST switch – Push and hold
• TEMP PROBE light – Extinguished
• TAT TEST switch – Release

Question 9

Cockpit Voice Recorder Test

Answer 9

*TEST switch………….Push

• After a slight delay, observe that the monitor indicator rises into the green band. A tone may be heard through a headset plugged into the headset jack.
• The indicator remains in the green band and the tone continues until the switch is released.

Question 10

Fire and Overheat System Test

Answer 10

*Fault/Inop detection…………….Check
-OVERHEAT DETECTOR switches - NORMAL
-TEST switch - Hold to FAULT/INOP
Verify MASTER CAUTION, OVHT/DET annunciator, FAULT and APU DET INOP lights are illuminated.
—If the FAULT light fails to illuminate, the fault monitoring system is inoperative.
—If APU DET INOP light fails to illuminate, do not operate APU.

*Fire/Overheat warning…………….Check
-TEST switch - Hold to OVHT/FIRE
—Verify fire warning bell sounds, master FIRE WARN lights, MASTER CAUTION lights and OVHT/DET
annunciator illuminate.

*Master FIRE WARNING light - Push
-Verify that the engine No. 1 and engine No. 2 start lever lights stay illuminated.
-Verify master FIRE WARN lights and fire warning bell cancel.
-Verify engine No. 1, APU, and engine No. 2 fire warning switch and engine No. 1 and engine No. 2 OVERHEAT lights are illuminated. If AC busses are powered, verify WHEEL WELL fire warning light is illuminated.
If an engine fire warning switch and an ENG OVERHEAT light do not illuminate, a detection loop is inoperative.

• Extinguisher test…………..Check
• EXTINGUISHER TEST switch - Hold to 1
• Verify the green extinguisher test lights are illuminated. Release switch and verify the lights are extinguished. Repeat test for position 2.
• Verify the L and R BOTTLE DISCHARGED lights are extinguished.

Question 11

Cargo Fire Protection System Test

Answer 11

• DETECTOR SELECT switches-NORM
• TEST switch-Push
• Verify fire warning bell sounds and master FIRE WARN lights illuminate.
• Master FIRE WARN light-Push
• Verify master FIRE WARN lights and fire warning bell cancel.
• Verify cargo fire (FWD, AFT) warning lights are illuminated.
• Verify DETECTOR FAULT light remains extinguished.
• Verify the green EXTINGUISHER test lights are illuminated.
• Verify the cargo fire bottle DISCH light is illuminated.

Question 12

Weather Radar Test

Answer 12

• EFIS mode selector-MAP, MAP CTR, VOR, or APP
• Weather Radar Mode-TEST
• WXR (EFIS control panel)-ON
• Verify test pattern consisting of the following colors appears:
• Green
• Yellow
• Red
• Magenta.

If testing of the PWS system is desired:

• Weather Radar Mode- Deselect TEST
• WXR (EFIS control panel)-ON
• Weather Radar Mode-TEST
• Verify the amber WINDSHEAR caution, red WINDSHEAR warning and PWS FAIL annunciations display momentarily and then extinguish.
• WXR (EFIS control panel)-OFF