When we examine the "VOR A" Jeppesen chart on LTAF airport page 23-4, we see that there are only circle-to-land minimums in the minimums section. When I researched the reasons for using circle-to-land instead of straight-in-land, I found the following reasons:
The final approach course alignment with the runway centerline exceeds 30 degrees.
The descent gradient is greater than 400 ft/NM from the FAF to the threshold crossing height (TCH). When this maximum gradient is exceeded, the circling only approach procedure may be designed to meet the gradient criteria limits. This does not preclude a straight-in landing if a normal descent and landing can be made in accordance with the applicable CFRs.
A runway is not clearly defined on the airfield.
However, when we examine the LTAF airport 23-4 page Jeppesen "VOR A" chart, we see that none of these conditions exist. The approach path is exactly the same as the final approach course (228°) and the descent gradient is less than 400 ft/NM.
So why weren't straight-in-land minimums specified in this chart, and we were asked to apply circle-to-land only with circle-to-land minimums for the airport?