Briefing Record Section

METEOROLOGY FLIGHT PLANNING

CHAPTER FOUR

Figure 4-8 Part IV: Comments/Remarks Section

411.

PART V: BRIEFING RECORD SECTION

The actual time the briefing is completed is entered in Block 34 of Part V (Figure 4-9). Block 35

provides the flimsy briefing number, which is the number identifying that particular weather

brief. It is made up of a two-digit month, followed by a sequential number for that month (e.g.,

02-35 indicates the 35th DD Form 175-1 completed in February). This flimsy briefing number

should be transferred to the DD 175 flight plan before submitting it to Base Operations, to

indicate the aircrew has received a weather brief from a qualified forecaster.

Figure 4-9 Part V: Briefing Record Section

Assignment of Void Time

Block 37 will show the void time of the weather brief. In accordance with OPNAVINST 3710.7,

Navy and Marine Corps forecasters are required to provide flight weather briefings (DD 175-1 or

VFR stamps) within 2 hours of ETD and to assign briefing void times that do not exceed ETD

plus one-half hour. For example, for an ETD of 2200Z, the weather must be briefed no earlier

than 2000Z, and actual departure must be no later than 2230Z.

If it appears that takeoff will occur outside this window of time (a total of 2 hours after the

brief time in Block 34) the weather brief needs to be updated. This can be accomplished via

telephone before walking for the flight, or from the cockpit via radio before takeoff. If the

weather brief as first given is still applicable, then it may be extended, and the aircrew should

indicate this in Blocks 38 - 40. Depending on conditions, however, it may have to be rebriefed

completely. In either case, the new valid time for a rebriefed forecast is subject to the same

limitations as the original void time: one-half hour after the new ETD (provided to the forecaster

so that the appropriate weather could be determined). This new void time needs to be entered

into Block 38 by the aircrew, and the time in Block 39 should reflect the time at which the re-

briefing is completed. Block 40 is provided for aircrew to indicate the initials of the forecaster

who updated the weather brief. Finally, Block 41 is filled in at the time of the original brief to

indicate the rank and last name of the person receiving the briefing, noted for METRO records.

FLIGHT WEATHER BRIEFING FORM, DD FORM 175-1 4-13