Hello,

KL652 will be operated with a 777-200ER on the 21st of July, these are not retrofitted, the cabin will be equipped with a 2-2-2 configuration with Collins Aerospace Diamond Parallel seats.

Note that your flight is fully booked (or overbooked) in Business class (J0 C0 D0 I0 Z0), and KLM might block the seat-map in that case until it's resolved.

Otherwise, try to play with the website. Click on "select" seats on one of the sectors where it still works, on the seat selection page don't change anything and click on orange button "continue to next flight" until "continue" appears, you will arrive on the page that lists all seats and options and there you might be able to select it. Note that aircraft change to 77W is not impossible on this route.

KL569 is operated on a 787, all seats have full aisle access in J.

Tip : In 48 hours or less, you will be able to find your specific aircraft registration on the website of Schiphol airport. Go on the main page -> Find a flight -> Date : 21st of July -> Enter KL651 (incoming flight) -> scroll the page down to : Aircraft details.