Log inLog in    RegisterRegister       SearchSearch    ProfileProfile    ContactContact    FAQFAQ    Log in to check your private messagesLog in to check your private messages

B737-300 Single Engine Driftdown

 
Post new topic   Reply to topic    www.TheAirlinePilots.com Forum Index -> Boeing 737
View previous topic :: View next topic  
Author Message
K.Haroon
Site Admin


Joined: 11 Dec 2005
Posts: 1308

PostPosted: Thu Feb 07, 2008 5:31 am    Post subject: B737-300 Single Engine Driftdown Reply with quote

If an engine failure occurs at cruise altitude, it may be necessary to descend. The autothrottle should be disconnected and the thrust manually set to CON. On the FMC CRZ page select the ENG OUT prompt, followed by the prompt corresponding to the failed engine. This displays the engine out cruise data and the FMC calculates engine out target speed and maximum engine out altitude at the current gross weight. The fields are updated as fuel is burned. Do not execute the page if VNAV is required for any arrival procedures. If any ENG OUT page is executed then FMC will not transition to descent.

Set the maximum altitude in the MCP altitude window and the engine out target airspeed in the MCP IAS window. Allow airspeed to slow to engine out speed then engage LVL CHG. If the "Engine Out Target Airspeed" and "Maximum Continuous Thrust" are maintained, the airplane levels off above the original MAX altitude. However the updated MAX altitude is displayed on the ENG OUT CRZ page. After viewing the engine out data, select the ERASE prompt to return to the active cruise page.

After level off at the target altitude, maintain MCT and allow the airplane to accelerate to the single engine long range cruise speed. Maintain this speed with manual thrust adjustment. Entering the new cruise altitude and airspeed on the ECON CRZ page updates the ETAs and TOD predictions.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    www.TheAirlinePilots.com Forum Index -> Boeing 737 All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum