Investigation Summary
The disaster occurred at the Neuhammer training area, one of the largest military exercise grounds in the German Reich. The mission involved I Group, Sturzkampfgeschwader 76 (I./St.G.76), executing a demonstration dive-bombing attack using practice bombs. The formation of 26 aircraft approached the target area at 4,000 meters (12,000 ft) and initiated a 70-degree dive through a cloud layer. A weather reconnaissance flight one hour prior had reported a cloud bank two-thirds covered with tops at 2,000 meters and a base at 900 meters, with good visibility below. Based on this report, the pilots planned to penetrate the clouds and acquire their targets visually between 300 and 400 meters, providing a significant safety margin above the ground. In the intervening time, a thick bank of ground fog developed. The ground controllers could not communicate this to the inbound flight due to a lack of radio contact. Pilots, focused on visual target acquisition during the high-speed descent, emerged from the clouds at roughly 100 meters, leaving insufficient altitude for a safe pull-out. While the formation leader managed to pull up through a forest clearing, the following aircraft either impacted the terrain directly or stalled during desperate recovery maneuvers.
Final Conclusions
The subsequent legal investigation acquitted the group commander, Hauptmann Walter Sigel. The court determined that Sigel had acted based on the official, though ultimately incorrect, weather reconnaissance report provided by the flight weather service. The primary cause was identified as Controlled Flight Into Terrain (CFIT) precipitated by rapidly changing weather conditions and inaccurate meteorological data. Despite the loss of 13 aircraft and 26 experienced crew members, the unit was replenished and participated in the invasion of Poland on 1 September 1939.
Video Analysis
No video analysis linked for this case file yet.
Systems & Failure Modes
Junkers Ju 87B Altimeter
During steep 70-degree dives, pilots found it difficult to monitor the altimeter while simultaneously focusing on visual target acquisition through the floor window or reflector sight.
Radio Communications
While the aircraft were equipped with R/T (radio telephony) for inter-flight communication, allowing the leader to shout a warning to his wingmen, the formation lacked radio contact with ground personnel at the training area. This prevented ground observers from warning the pilots that the cloud base had dropped from 900 meters to 100 meters.
Interesting Facts
- 01The accident resulted in the total loss of 13 aircraft and 26 crew members (13 pilots and 13 gunners).
- 02The cloud base was reported as 900 meters but had dropped to approximately 100 meters due to ground fog.
- 03The aircraft were performing a 70-degree dive, a standard Stuka attack profile.
- 04The disaster occurred exactly 17 days before the start of World War II.
- 05The formation leader, Walter Sigel, survived the accident and was later acquitted of negligence.
Safety Actions & Advisories
Weather Reporting Procedures
The investigation highlighted the danger of relying on weather reports that were an hour old in conditions prone to rapid fog formation, though the Luftwaffe continued aggressive low-level training.