This was a night precision mission involving 19 planes from the 6th Bomb Group:

Operations continued on the night of 3 April after a four-day rest with a precision attack on the Nakajima Aircraft engine works at Ota-Koizumi, northwest of Tokyo. The target was obscured by an undercast and bombing was by radar. Subsequent photo reconnaissance showed 10.5 per cent of the target’s roof area damaged.

[Pirate’s Log, p. 35]

20th Af Mission 56

Date: 3 April 1945
Code Name:Furious #1
Target:Nakajima A/C Factory in Koizumi 90.17 – 1545
Secondary – Urban Tokyo
Participating Units: 313th Bombardment Wing
Number of A/C Airborne: 68
% A/C Bombing Primary:71% (48 primary and 18 Secondary)
Type of Bombs and Fuzes:
Tons of Bombs Dropped:
Time Over Primary:040214K – 040341K
Altitude of Attack:7200 – 7950
Weather Over Target:10/10
Total A/C Lost:0
Resume of Mission:Bombing results – 353,600 square feet or 9.5% of total roof area destroyed or damaged. Total damage to date is 882,900 square feet or 23.8% of the total roof area. Twelve aircraft were non-effective. Enemy opposition weak – 3 attacks. Enemy aircraft destroyed, one and none probably destroyed or damaged. A/A heavy, meager to intense, inaccurate to accurate. Average bomb load 14,829 lbs. Average fuel reserve 947 gallons. One B-29 received minor damage by E/A. Three B-29’s received minor damage by A/A.