Blackest day for IAR 80/81

[cainele_franctiror]

Which was the blackest day for IAR 80/81?
In my view it was 21 May 1944

[Dénes]

To me it's clearly April 21, 1944, the first time the I.A.R. 80/81 pilots encountered the P-51B/C Mustang in battle:
Gr. 1 vân: 6 a/c destroyed, 5 dead;
Gr. 2 vân.: 4 a/c destroyed, 2 dead;
Gr. 6 vân.: 4 a/c destroyed, 4 dead;
Gr. 7 vân.: min. 6 a/c destroyed, 5 dead;
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Total: min. 20 a/c destroyed, 16 pilots dead.

Col. Dénes

[cainele_franctiror]

I intended to say 21 april... On 21 May there was no even an USAAF atack