CAD Log Audit: Average Time, Miscode, and Invalid Clock Time
Review five CAD entries from a training log. The approved codes are: 10-31 = crime in progress; 10-50 = vehicle accident; 10-52 = ambulance requested; 10-16 = domestic dispute; 10-8 = available. Entries: (1) 08:12–08:19, 10-50, '2-car fender bender, no injuries'; (2) 08:21–08:29, 10-31, 'store robbery, suspect fled'; (3) 08:30–08:44, 10-52, 'caller reports difficulty breathing'; (4) 08:46–08:53, 10-50, 'armed robbery in progress, suspect inside'; (5) 08:55–09:08, 10-16, 'verbal dispute, no weapons.' A sixth entry reads '09:10–09:67, 10-8, available.' The log supervisor wants the average handling time for the five valid timed entries, a list of coding or time errors, and a corrected line for the armed-robbery entry. The average is used only for training review, not for discipline.
1. Calculate average handling time for the five valid entries; show work.
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Durations:
- Entry 1: 08:12 to 08:19 = 7 minutes
- Entry 2: 08:21 to 08:29 = 8 minutes
- Entry 3: 08:30 to 08:44 = 14 minutes
- Entry 4: 08:46 to 08:53 = 7 minutes
- Entry 5: 08:55 to 09:08 = 13 minutes
Sum = 7 + 8 + 14 + 7 + 13 = 49 minutes. Average = 49 ÷ 5 = 9.8 minutes.
The sixth entry is excluded because its end time is invalid, so it cannot be used in the average without correction.
2. Identify every error in the log and explain how you would correct each.
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Entry 4 miscode
'10-50' means vehicle accident, but the narrative says armed robbery in progress. Under the approved list this should be 10-31, crime in progress. Correct the code, not the narrative, unless the narrative itself is wrong.
Sixth entry invalid time
'09:67' is not a valid clock time because minutes run 00–59. Do not guess the intended time. Flag it for correction against the source record, then re-enter a valid time such as 10:07 only after verification. Also check whether a 10-8 available status should have start/end times at all; it may be a status entry rather than a call.
Other entries
Entries 1, 2, 3, and 5 match the approved code meanings and have valid times. Entry 5's 10-16 for a verbal domestic dispute is reasonable; the narrative should still note 'no weapons' as reported.
3. Write the corrected CAD line for entry 4 using the approved code and confirmed facts.
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Corrected line: 08:46–08:53, 10-31, armed robbery in progress, suspect inside.
I would keep the original narrative facts and change only the code from 10-50 to 10-31. I would not add details such as a weapon type, number of suspects, or injuries unless they appear in the source. The 7-minute duration stays the same because the start and end times are valid. If the log requires a disposition field, I would mark it 'corrected - code changed from 10-50 to 10-31 per narrative.'