I was able to find these photos of the A-36 which show the dive brakes, employed to improve accuracy.
The A-36, dubbed “Apache” by NAA (though not adopted officially by the USAAF), was developed from the Mustang I in response to a USAAF requirement for a high-speed dive bomber. Air Force officials noted the success of the Junkers Ju-87 “Stuka” and developed the requirement to meet the needs of the Army to support its ground forces. The high speed of the A-36 required that it incorporate air brakes in the wings to limit its dive speed to 390mph to improve accuracy. The A-36 proved to be very successful in its service career flying 23,373 combat sortied and delivering over 8,000 tons of ordnance on targets in the Mediterranean theaters. A total of 84 enemy aircraft were shot down and 17 more strafed on the ground for a loss of 177 A-36’s to enemy action. Though that is a loss of over 30% of the airframes built it is indicative of the dangerous and difficult missions it performed so successfully.
Chuck Gardner –Warbirds Resource Group
|Type: Attack Bomber
Origin: North American
First Flight: N/A
Service Delivery: N/A
Unit Cost: $49,000
Serial Number Range: 42-83663 to 42-84162
Loaded: 10,000 lb.