CTU 7.303 initiclly bed evaileble @ tetel cf only two scintill~- ticn noters (type TH 3.B) for tho purpose of coniucting survey flichts pricr to UNION, This nernt that only two sirereft could confuct @ survey flicht at any one tine ane that no stanceby instrue nents wers cvailcble when two fli-hte ware cir bernc. If iastru- rent failure aed. ocourcé in flirht the entire aission would heve ho@ to beun shorted. dditional instrwents k tar wore once ovalle eble so that CTU 7.303 had a total cf seven ssientiliction acters for UNION, anc for all subsequent shots. It is dosirabla that two scientillation neters be -rde available for ozch fli;;nt required to be air borne, This would pecvent aburtans a flicht for recson of instrunont fcilure. In cdcition to the thra. esteblished mttarns .5LE, B’KER and CHARLIE, one specicl survey flicht wes flown cn March 6 nonitering ell the mejor GILBECT Isirnmis, This wr: approve by the British Authorities onc the rcsults we oa forward:d to U.S. Novel cttacho, Iendon, for tho infornation of the Britis: Govornuent. The atoll survey flights initislly prcesontec a prcoblor- in as much ag there verw no suitablo charts evail-bls. Hydro-raphic eherts wore few end conorally unsuitable for ccckpit use cue to their size, Letor a number of atoll photo pack.ts were cede. These ccnsistec of 27 cifferont atoll photo;rerhic reprorw tions of 8 x 10 sizo suitchls for cockpit uso, | & tetel cf 27 survoy flirhts wer, concuctad with the flicht tir.2 anountin;- to 197,5 hows, This is an sp,reclably creater effort thcn ori-inally cnticipetoc and wes duo, in ort, to rezect flishts occesioncd by shot dclsys. Hea J-25