DCS F-18 - Emergency of the Day

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 45 - EXT XFER Caution on DDI

EXT XFER

IFEI = Integrated fuel-Engine Indicator
SDC = Signal Data Converter

1. Not Applicable.
2. FUEL page / Fuel Quantity Indicator / IFEI ... ... ... ... IDENTIFY EXT TANK WITH TRAPPED FUEL

Perform the following steps while monitoring fuel transfer, tank quantities, and lateral asymmetry -
3. EXT TANKS switch(es) ... ... ... ... ... ... ... ... ... ... ... ... ORIDE
4. EXT TANKS switch(es) ... ... ... ... ... ... ... ... ... ... ... ... CYCLE to STOP and back to ORIDE
5. EXT TANKS switch(es) ... ... ... ... ... ... ... ... ... ... ... ... NORM
6. PROBE switch ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... CYCLE
7. Apply positive and negative g.
8. FUEL page / SDC / RESET

If practical -
9. Descend below freezing level and repeat steps 3 thru 8.
10. If below 10,000 feet MSL, BLEED AIR knob ... ... ... ... CYCLE THRU OFF TO NORM
11. LDG GEAR and HOOK handles ... ... ... ... ... ... ... ... ... DOWN
12. LDG GEAR and HOOK handles ... ... ... ... ... ... ... ... ... UP
13. Perform in-flight Refueling.

If / when transfer complete but prior to landing -
14. EXT TANKS switch(es) ... ... ... ... ... ... ... ... ... ... ... ... ... NORM

If external wing tanks fuel trapped -
15. Ensure lateral asymmetry within limits for landing.

FOR CARRIER LANDING
If centreline tank is still over 500 pounds -
16. Divert or SELECT JETT tank.

Cause

• One or more external tanks failed / slow to transfer when commanded.

Remarks
Icing may occur in the external fuel tank pressurisation system inhibiting external tank transfer and refueling. Descending and accelerating may reduce the effects of icing.
External fuel available but not transferring.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 46 - L or R FLAMEOUT Caution on DDI

L FLAMEOUT &/or R FLAMEOUT

Audio - “Engine Left, Engine Left” or “Engine Right, Engine Right”

SINGLE ENGINE FLAMEOUT
* 1. Throttle affected engine ... ... ... ... ... ... ... ... ... ... ... ... IDLE

If rpm continues to decrease with increasing EGT (failed auto-restart) -
- 2. Throttle affected engine ... ... ... ... ... ... ... ... ... ... ... ... OFF
- 3. Refer to Single Engine Approach and Landing procedure.

If engine auto-restarts -
- 4. Check engine response at a safe altitude.
- 5. Land as soon as practical.
- 6. Consider HALF flap approach for landing.

Cause

• Designated exhaust Flamed out.

Remarks
CAUTION
Attempting to restart an engine that has flamed out for no apparent reason may result in an engine bay fue leak / fire.
If an engine fails, the corresponding generator and HYD system will be lost. Either generator supplies sufficient power to operate all electrical items. A windmilling engine can cause repeated flight control transients as the hydraulic switching valves operate. Various FCS cautions will come on intermittently. After the rpm has decreased to near zero, the transients will cease, the FCS cautions wil go off, and FCS operation will be normal. To prevent repeated switching valve cycling, avoid stabilised flight where engine windmilling rpm producs hydraulic pressure fluctuations between 800 to 1,600 psi. If control of a surface is lost due to a frozen or sticking switching valve, attempt to unstick the valve by gently cycling the flight controls, and reset the FCS

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 47 - FLIR OVRHT Caution on DDI

FLIR OVRHT

FLIR = Forward Looking Infra-Red

1. FLIR switch ... ... ... ... ... ... ... ... ... ... ... ... OFF (if practical).

Cause

• Targeting FLIR internal overheat detected.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 48 - L or R FUEL HOT Caution on DDI

L FUEL HOT &/or R FUEL HOT

AMAD = Airframe Mounted Accessory Drive

PRE-FLIGHT
1. Throttle affected engine ... ... ... ... ... ... ... OFF

IN FLIGHT
1. Throttle affected engine ... ... ... ... ... ... ... Increase fuel flow (if practical)
2. Wing fuel switch ... ... ... ... ... ... ... ... ... ... CHECK NORM
3. MENU ENG ... ... ... ... ... ... ... ... ... ... ... ... MONITOR FUEL TEMP (<79 Degrees C)
4. Land as soon as practical.

POST FLIGHT
If caution remain for more than 5 minutes -
5. Throttle affected engine ... ... ... ... ... ... ... OFF

Cause

• Designated engine fuel feed temperature too high.

Remarks
Fuel temperature greater than 79 degrees C may cause AMAD to overheat with associated cautions.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 49 - FUEL LO Caution on DDI and Annunciator Panel

FUEL LO & FUEL LO

Audio = “Fuel Low, Fuel Low”

1. Throttles ... ... ... ... ... ... ... ... ... ... ... ... Reduce fue flow (if practical).
2. Land as soon as possible.
3. Check for fuel transfer failure indications.

If trapped fuel indicated -
4. EXT TANK switches . ... ... ... ... ... ... ... CHECK
5. Avoid negative g manoeuvring.

Cause

• At least one feed tank below 800 pounds.

Remarks
May indicate fuselage fuel leak.
Sideslip may be required to transfer wing fuel.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 50 - FUEL XFER Caution on DDI

FUEL XFER

1. Stop manoeuvreing.
2. Check transfer tanks 1 & 4.
3. Calculate CG.

If CG aft of limit -
4. Refer to Landing With Aft CG.

Cause

• Tanks 1 and 4 fuel distribution out of balance.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 51 - L GEN &/or R GEN Caution on DDI and Annunciator Panel

L GEN &/or R GEN & L GEN &/or R GEN

OBOGS = Onbaord Oxygen Generation System
PTS - Power Transmission Shaft

SINGLE GEN FAILURE
1. Generator Switch ... ... ... ... ... ... ... ... ... ... ... ... CYCLE

If generator still failed -
2. Generator Switch ... ... ... ... ... ... ... ... ... ... ... ... OFF
3. Land as soon as practical.

Cause

• Designated generator off line.

Remarks
Either generator can support the total aircraft electrical load.
With both generators offline refer to Double Generator Transformer Rectifier failure.

With both generators offline -
No OBOGS
If associated with BOOST LO and both HYD circuit cautions, may be a PTS failure.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 52 - GEN TIE Caution Annunciator Panel

GEN TIE

GROUND
If PARK BRK released during first engine start -
Battery Start
1. PARK BRK handle ... ... ... ... ... ... ... ... ... ... ... ... SET
2. Operating GEN switch ... ... ... ... ... ... ... ... ... ... CYCLE
3. Start second engine.

External Power Start
1. PARK BRK handle ... ... ... ... ... ... ... ... ... ... ... ... SET
2. GEN TIE CONTROL switch ... ... ... ... ... ... ... ... ... CYCLE
3. Start second engine.

IN FLIGHT
1. GEN TIE CONTROL switch ... ... ... ... ... ... ... ... ... NORM (DO NOT CYCLE)

If both GENs operating -
1. Do not attempt to reset GEN TIE.
2. Continue mission with GEN TIE on.

With L or R GEN caution light -
2. GEN switch affected side ... ... ... ... ... ... ... ... ... CYCLE

If GEN restored -
3. Do not attempt to reset GEN TIE.
4. Continue mission with GEN TIE on.

If GEN still failed -
3. GEN Switch affected side ... ... ... ... ... ... ... ... ... OFF
4. Land as soon as practical.
5. Refere to Emergency Power Distribution chart.

Cause

• Left and right 115 vac buses are isolated (bus tie open).
• May be caused by initial engine start with the PARK BRK released or by electrical fault protection circuitry.

Remarks
CAUTION
IF the left and right buses are isolated because of a detected fault, cycling the GEN TIE CONTROL switch reenergises the faulty bus/equipment and may cause further damage or loss of the remaining generator.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 53 - G-LIM 7.5 G Caution on DDI and “Flight Control” Audio Warning

G-LIM 7.5 G

Audio = “Flight Controls, Flight Controls”

Nz = Normal Acceleration = Acceleration in the pitch axis
FCC = Flight Control Computer
MUX = Multiplex Bus
PROC = Processor
FCS = Flight Control System
INS = Inertial Navigation System

1. Limit intentional accelerations to the following:

GW (lb)	Acceleration (g)
<= 32,357	-3.0 to +7.5
34,000	-2.9 to +7.1
38,000	-2.6 to +6.4
42,000	-2.3 to +5.8
50,000	-1.9 to +4.8

Cause

• Nz REF set to 7.5g regardless of gross weight.

Remarks
G-limiter will not prevent an aircraft overstress at gross weights above 32,357 lb. Above 32,357 lb gross weight, pilot must limit g to prevent overstress.
The presence of the G-LIM 7.5 caution may be an indication that the FCC has declared MUX Data failed. If this is the cause for the G-LIM 7.5 G caution, Xs will appear in CH 1/3 of the PROC row on the FCS page, as the FCS will stop using INS provided data across the MUX. There is no significant degreation to flying qualities, departure resistance or roll performance with these failure indications.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 54 - G-LIM OVRD Caution on DDI

G-LIM OVRD

Nz = Normal Acceleration = Acceleration in the pitch axis
NWS = Nose Wheel Steering

1. Stick ... ... ... ... ... ... ... ... ... ... ... Return to near neutral to disengage overide.

Cause

• G-limiter overridden.

Remarks
Selected by momentarily pressing the paddle switch when the stick is near the full aft limit. Maximum allowed g-limit increased by 33% (allows a 10g command at 7.5g Nz REF). Unless g-limiter override is desired, control maximum g-level. If the paddle switch has failed electrically, NWS and the autopilot may be commanded off without pilot action or notification.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 55 - GPS DEGD Caution on DDI

GPS DEGD

HERR = Horizontal Error

Information.

Cause

• GPS approach flight phase and HERR exceeds 108 feet for 10 seconds.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 56 - GUN GAS Caution on DDI

GUN GAS

1. Do not fire gun, even if caution clears.

Cause

• Gun purge air pressure low.

Remarks
WARNING
Failure to purge cartridge combustion gases may result in a gun bay explosion and significant aircraft damage.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 57 - HAND CTRL Caution on DDI

HAND CTRL

Information.

Cause

• One hand controller inoperative.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 58 - HOME FUEL Caution on DDI

HOME FUEL

1. Change HOME waypoint (if appropriate) or analyse configuration, fuel flow, and profile for BINGO..

Cause

• Fuel remaining sufficient to fly to HOME waypoint with 2,000 lbs reserve or less.

Remarks
HOME FUEL caution logic is disabled with WonW, the refueling probe extended, the landing gear cycled down then up, or within 5 seconds after a HOME waypoint change.

[VBF-12 Gosling]

DCS F-18 - Emergency of the Day 59 - IFF 4 Caution on DDI and “Mode 4 reply” Audio Warning

IFF 4

Audio = “Mode 4 reply, Mode 4 reply”

KIT 1C = Cryptographc keys Equipment.

Information.

Cause

• Transponder failled to respond to a valid mode 4 interrogation (failure or mode 4 not enabled).
• Failure is the KIT 1C.
• Mode 4 codes zeroised, or KIT 1C installed but not keyed with crypto

Remarks
The IFF 4 caution and voice alert are disabled with the IFF MODE 4 switch in the OFF position.