> ## Documentation Index
> Fetch the complete documentation index at: https://www.narev.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Captain preflight — part 3

> Captain preflight — part 3: conditions, actions and checks for the Boeing 737-800.

Use this procedure when its prerequisites apply. Confirm each required aircraft state before acknowledging the corresponding checklist item.

## General

Complete the preliminary, CDU, captain and first-officer procedures in the applicable ground configuration. Retain the side-specific requirements. A captain instrument or control does not satisfy an independent first-officer or standby check.

Use the assigned detailed panel procedures for Set, Check, Test and Pass requirements. Observe the specified result and restore the required operating configuration after each actual cockpit test. Do not operate a system merely because its control appears in the reference list.

Complete loading, performance preparation and the required equipment checks before progressing to the dependent departure procedures. Where an item requires an external inspection or crew adjustment, retain the assigned verification or explicit scenario exclusion.

### 1. Flap lever — **Set**

When the stated condition is satisfied, select the assigned flap detent for this phase. Verify the required lever detent and actual flap/slat configuration.

> **Checks and evidence**
>
> **Expected response:** Set
>
> **Verification:** Verify the chosen lever detent and the required actual flap/slat configuration.

### 2. Flaps indicator — **Check**

Check actual flap indication as required, keeping it separate from lever position.

> **Checks and evidence**
>
> **Expected response:** Check
>
> **Verification:** Require flap-position/extension evidence and agreement with the intended lever selection.

### 3. Parking brake — **Set**

Set the parking brake using the configured brake procedure. Verify the brake is set.

> **Checks and evidence**
>
> **Expected response:** Set
>
> **Verification:** Observe the requested brake state, and for ground-handler control obtain the actual handler instruction.

### 4. Engine start levers — **Cutoff**

Set both engine start levers to CUTOFF. The start levers control fuel admission; they are separate from the rotary engine start switches.

> **Checks and evidence**
>
> **Expected response:** CUTOFF
>
> **Verification:** Read back the lever positions and the phase-appropriate engine outcome.

### 5. Stabilizer trim cutout — **Normal**

Verify the required NORMAL trim-cutout configuration without treating a pitch-trim ratio as switch position.

> **Checks and evidence**
>
> **Expected response:** NORMAL
>
> **Verification:** Require the relevant cutout-switch states.

### 6. VHF NAV radios — **Set for departure**

Tune and verify the departure navigation radios using the configured conventional NAV or MMR receiver and approved frequencies/courses.

> **Checks and evidence**
>
> **Expected response:** Set for departure
>
> **Verification:** Verify the active receiver frequency and intended identification/course where available.

### 7. Audio control panel — **Set**

Apply the mission’s transmit/receive selections and volumes; do not assume a radio is audible from its frequency alone.

> **Checks and evidence**
>
> **Expected response:** Set
>
> **Verification:** Verify requested audio selection and communication capability with the environment.

### 8. Seat — **Adjust**

Adjust the seat for the crew position identified by this section. Verify the required adjustment or record the authorized simulator-scenario exclusion.

> **Checks and evidence**
>
> **Expected response:** Adjust
>
> **Verification:** Use an explicit simulator/crew attestation or a pre-approved scenario exclusion.

### 9. Rudder pedals — **Adjust**

Adjust the rudder pedals for the crew position identified by this section. Verify the required adjustment or record the authorized simulator-scenario exclusion.

> **Checks and evidence**
>
> **Expected response:** Adjust
>
> **Verification:** Use an explicit simulator/crew attestation or a pre-approved scenario exclusion.

## Continue after this procedure

Continue to [Captain preflight — part 4](https://www.narev.ai/docs/irl-gym/aircraft/procedures/captain-preflight-4.md). The checklist adds no condition between these parts; the next part’s individual step conditions still apply.


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