Route Correction — Fix a Mistyped Destination

Step-by-step: Route Correction — Fix a Mistyped Destination

1. Press the RTE page key to open ROUTE.

   Real-world scenario: dispatch sends a corrected OFP, or ATC issues a reroute clearance. You need to overwrite an entry that's already there. The 737 CDU requires CLR-and-retype, not edit-in-place.

2. Type KJFK and press 1L for ORIGIN.

   Same as a normal route entry. The mistake comes next.

3. Now type EGKK (London Gatwick) and press 1R for DEST. (We'll fix this in the next step — this is the wrong airport.)

   EGKK is London Gatwick, not Heathrow. A common mistake when copying from an OFP — adjacent codes, similar destinations.

4. You realise the OFP says EGLL, not EGKK. To fix it: press CLR (or Backspace) until the scratchpad is empty, type EGLL, then press 1R again to overwrite DEST.

   On the 737 CDU there is no edit-in-place. Pressing an LSK with new scratchpad content overwrites whatever was there. This is how every correction works on the box, including ATC reroutes.

5. Type BAW178 and press 2R for FLT NO to confirm the route is now correct.

   Sanity check — fixing one field doesn't reset the others. The flight number, CO ROUTE, and any other entered data persist.