Annunciator Causes

Question 1

BAT BUS (RED)

Answer 1

Battery bus inoperative

Question 2

GEN BUS (RED)

Answer 2

Generator bus inoperative

Question 3

PMU FAIL (RED)

Answer 3

PMU failure

Question 4

GEN (RED)

Answer 4

Generator inoperative

Question 5

CKPT PX (RED)

Answer 5

Cockpit overpressurization, pressure exceeds 3.9 to 4.0 psi

Question 6

CANOPY (RED)

Answer 6

Canopy unlocked/unsafe

Question 7

FUEL PX (RED)

Answer 7

Fuel pressure below 10 psi in the motive flow/return flow supply line

Question 8

OIL PX (RED)

Answer 8

Oil pressure at or below 15 psi
Oil pressure 15-40 psi for 5 sec at idle
Oil pressure at or below 40 psi above idle

Question 9

OBOGS FAIL (RED)

Answer 9

OBOGS system malfunction

Question 10

CHIP (RED)

Answer 10

Engine chip detector indicates oil contamination

Question 11

CKPT ALT (AMBER)

Answer 11

Cockpit pressure altitude above 19,000 feet

Question 12

HYDR FL LO (AMBER)

Answer 12

Hydraulic reservoir fluid level below 55 cubic inches (1 qt)

Question 13

OIL PX (AMBER)

Answer 13

Oil pressure 15-40 psi at idle
Oil pressure 40-90 psi for 10 seconds above idle

Question 14

BUS TIE (AMBER)

Answer 14

BUS TIE switch open, or bus tie inoperative

Question 15

FUEL BAL (AMBER)

Answer 15

Fuel imbalance exceeds 30 pounds for 2 minutes, or fuel probe fail, or EDM fail

Question 16

PMU STATUS (AMBER)

Answer 16

PMU has detected and accommodated a fault in-flight or WOW switch failure

Question 17

EHYD PX LO (AMBER)

Answer 17

Emergency hydraulic pressure at or below 2400 +/- 150 psi

Question 18

TAD FAIL (AMBER)

Answer 18

Rudder trim aid device failure

Question 19

OBOGS TEMP (AMBER)

Answer 19

OBOGS temperature above 200*F

Question 20

L FUEL LO (AMBER)

Answer 20

Left wing tank below approximately 110 pounds usable fuel

Question 21

R FUEL LO (AMBER)

Answer 21

Right wing tank below approximately 110 pounds usable fuel

Question 22

DUCT TEMP (AMBER)

Answer 22

Environmental duct or defog duct above 300*F

Question 23

IGN SEL (GREEN)

Answer 23

Ignition on

Question 24

M FUEL BAL (GREEN)

Answer 24

FUEL BAL switch in MANUAL position

Question 25

TRIM OFF (GREEN)

Answer 25

TRIM DISCONNECT switch activated

Question 26

BOOST PUMP (GREEN)

Answer 26

BOOST PUMP selected by switch, starter relay, or low pressure switch

Question 27

ANTI ICE (GREEN)

Answer 27

PROBES ANTI-ICE switch on

Question 28

TAD OFF (GREEN)

Answer 28

Rudder trim aid device selected off

Question 29

ST READY (GREEN)

Answer 29

PCL positioned for auto start

Question 30

OXY CRIT (RED)

Answer 30

Combined OBOGS FAIL and BOS FAIL annunciators

Question 31

BOS PUSH MAN ON (GREEN)

Answer 31

Activation of the ABOS system

Question 32

FAIL (Amber) FDR Annunciator

Answer 32

IDARS has failed; notify maintenance

Question 33

MAINT (Green) FDR Annunciator

Answer 33

IDARS memory is 80% full or over-G may have occurred; notify maintenance

Question 34

CVR, FDR, BIT (Amber) FDR Annunciator

Answer 34

CSR has failed; notify maintenance

Question 35

MX (Blue) FDR Annunciator

Answer 35

CSR memory is over 80% full or no SD is inserted into the SD card slot, or an over-G may have occurred; notify maintenance