US · guidance
BOP Program Statement 8531.14 § 6
TRANSIT TIME ESTIMATES – FOB DESTINATION
FPI is required to ensure adequate internal controls exist regarding reliability of transit times. It
is an acceptable accounting practice to estimate delivery times, if the costs of tracking actual
receipt dates outweigh the benefits.
P8531.14 03/20/2015 4
The Deputy Controller, responsible for accounts receivable, or designee, ensures that reliable
estimates of transit times can be determined for shipments of similar products to similar
destinations.
a. Reporting Requirements. The Prime Business Manager or designee of each location within
each Business Group ensures a sample of FOB Destination shipments is completed for their
plants. Actual transit times for each shipment are tracked and reported.
At the beginning of each month, random samples are generated from a population of FOB
Destination shipments for the month prior. Samples are made available by Accounts Receivable
via SharePoint to be completed by each Business Group. Samples are pulled from a population
of all FOB Destination deliveries. Multiple deliveries are removed from the population before a
sample set is pulled from each business area, to include at least one sample for every factory
listed in the population. The number of samples selected is determined from the population
based on a 95% confidence level and a 10% margin of error. All transit time averages are
rounded up to the next full value or day.
Each FFA is responsible for ensuring the samples for his/her areas are completed no later than
the 10th working day of the month following the month being reviewed. Average transit times
for each Business Group will be determined using the completed transit time sample
spreadsheets.
b. Variances. The Deputy Controller responsible for accounts receivable, reviews in-transit
times for each business group, and compares them to established times each quarter, making
adjustments as needed.
History
PS 8531.14 dated 2015-03-20
Provenance
- Source
- bop.gov
- Retrieved
- 2026-09-20
- Edition
- bop-ps-2026-09-20
- Content hash
d97c6e5aa96df25e2030507037e6c7e4eb49f35d3c30c5d872304696d789ac7a
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