Abnormal Procedures

These procedures are derived from the efis-editor checklist file.

Abnormal

Loss of Fuel Pressure

• Fuel Pressure … CHECK GREEN

  should be 45 PSI DIFF; auto-cutover trips when Borla output drops to 22 PSI absolute (Dynon DIFF varies with MAP)

• Pump 2 Annunciator … VERIFY ENGAGED

  amber on EFII controller — Bus Manager auto-cutover

If Pump 2 not engaged:

• Fuel Pump Mode … 2

  manual override

• Fuel Selector … OTHER TANK

  rules out tank issue

If pressure restored:

• Fuel Pump Mode … TRY 1/AUTO

  if Pump 1 actually failed, Bus Manager auto-cuts back to Pump 2 when Borla output drops to 22 PSI absolute

• Plan Diversion … NEAREST SUITABLE

Single ECU Failure

Symptoms: rough running, EGT spread, ECU GRAY/RED on controller.

• ECU Select … OPPOSITE ECU

• Fuel Trim … ADJUST

  if sensor failure caused rich/lean condition

• Power … REDUCE TO SMOOTH

• Plan Diversion … NEAREST SUITABLE

Note: Once you’ve identified the bad ECU, do NOT switch back to test.

Door Open In Flight

⚠️ WARNING: FLY THE AIRPLANE FIRST.

• Airspeed … SLOW TO ~100 KIAS

  reduces airflow load on door

• Door … DO NOT ATTEMPT TO CLOSE

  cannot be re-latched against airflow

• Occupant … BRACE / HOLD

• Land … NEAREST SUITABLE

Smoke / Smell Investigation

Use this when something smells off but no fire is visible.

• Source … ATTEMPT TO IDENTIFY

  electrical / oil / fuel / hot dust / exhaust

• Recent Switch Activations … NOTE

  anything just turned on?

• Vents … OPEN

• Plan Diversion … NEAREST SUITABLE

  do not wait for it to escalate

Note: If smoke or visible fire develops → Electrical Fire / Smoke In Cockpit.

CO Alarm In Flight

CO Guardian audible alarm above 50 PPM. Most likely source: heat muff exhaust crack.

• Cabin Heat … OFF

• Vents … OPEN

• Oxygen Mask … DON / CONSTANT FLOW

  especially at altitude — CO displaces O2 in blood

• Land … AS SOON AS PRACTICABLE

Note: Have the heat muff and exhaust inspected before next flight.

Oxygen System Failure / Hypoxia

Symptoms: lightheadedness, tunnel vision, fingernails turning blue, fatigue. EDS-4iP not pulsing.

• O2 Mode Switch … EMERGENCY (CONSTANT FLOW, ALL PORTS)

  panel toggle bypasses pulse-on-demand and supplies all ports continuously

• Cannulas / Masks … VERIFY SEATED

• Bottle Pressure … CHECK

• Descend … BELOW 10,000 FT MSL

  if symptoms persist, declare and divert