Startup procedure bugs / omissions

I'm summarizing here what I found so far by following the start-up checklist from the NATOPS manual:

7. Igniters — CHECK (boost pump lights out).

a. Depress airstart button.

The igniters fire in and out of phase with each other and produce an irregular cracking sound. If this cracking sound is regular, one of the igniters has failed.

b. Manual fuel switch — ON.

c. Check igniters — SWITCH OFF.

NOT IMPLEMENTED

16. Brake pressure — CHECK.

With the brake pedals fully pressed, check that brake pressure is 2,700 psi minimum.

BRAKE PRESSURE DOESN'T CHANGE / FLUCTUATE WHEN DEPRESSING PEDALS

7. Transformer-rectifier/boost pumps — CHECK.

a. Leftandrightpumpswitches—OFF. (1) Pump lights ON.

b. Left and right pump switches — DC.

(1) Pump lights — OFF.

(2) Voltmeter stable at approximately 27 volts.

c. DC test switch — SET TO MAIN.

(1) STBY TR caution illuminates at approximately 24.75 volts. (2) Voltmeter returns to above 25.5 volts.

7-17

ORIGINAL

A1-AV8BB-NFM-000

A1-AV8BB-NFM-000

d. DC test switch — SET TO STBY.

(1) Voltmeter drops to approximately 25.5 volts. (2) Left and right pump switches — NORM.

(a) Increase of 1 volt for each pump.

e. DC test switch — SET TO CENTER POSITION.

VOLTMETER IS ALWAYS STUCK AT 27.5V AND IS NOT AFFECTED BY THE CHECK PROCEDURE ABOVE

11. EVICS — CHECK.

a. Throttle — ADJUST TO 55 PERCENT CORRECTED HP COMPRESSOR SPEED (ENGINE PAGE ON THE DDI/MCPD) AND RETURN TO IDLE.

ORIGINAL

7-18

Note

55 percent corrected HP compressor speed is required for EVICS to complete its diagnostic preflight checkout.

 

For AV-8B aircraft with F402-RR-408B engine installed, after completion of pilot checks and EVICS diagnostic checkout (above), aircrew shall check the readings on the IGV bit on BIT 1 page. An IGV 1 code indicates a failure of the EVICS. If IGV 1 is displayed flight is prohibited.

BIT PAGE NOT IMPLEMENTED

22. SAAHS BIT — INITIATE (3 FINGER SIGNAL).

a. On BIT display — SAAHS BUTTON PRESS.

(1) TEST is displayed next to SAAHS display.

(2) AFC, PITCH, ROLL and YAW caution lights flash until MASTER CAUTION is pressed. (3) 40 seconds after BIT initiated, stick shakes in pitch axis.

b. Record all failures.

c. All lights go out after successful completion of BIT.

BIT PAGE NOT IMPLEMENTED

23. Paddle switch — PRESS, CHECK ALL THREE SAAHS AXES DISENGAGE — (LIGHTS ON).

SAAHS NOT DISENGAGING AS DESCRIBED, ANNUNCIATOR LIGHTS DON'T TURN ON

9. Manual fuel switch — CHECK.

Place the manual fuel switch ON and check MFS caution light on. Maintain idle limits. Place water switch to TO and note steady rpm. Place water switch to OFF, then place manual fuel switch OFF. Check MFS light off. RPM should not be allowed to drop below 20 percent for the -406 engine and 22 percent for the -408 engine.

ENGINE RPM REMAIN ROCK STEADY DURING THIS CHECK, NO NEED TO WORRY ABOUT IDLE RPM AS DESCRIBED IN THE CHECKLIST (it seems as if the engine is behavior is not very dynamic here)

+1

*OP updated

Bump: please Razbam acknowledge

BUMP!

[ADDED TO COMMUNITY BUG TRACKER]

https://docs.google.com/spreadsheets/d/1gYpmYD4VVaTn1YkHd_K7CJxOysoOqdN-K5oZs_anX7c/edit?usp=sharing