Postcard, February 17, 1971


Many areas of Vietnam were controlled by the Viet Cong, so trucks were unable to pass safely, even in convoys.  Katum was pretty remote--about 4 miles from Cambodia.  The VC operated  freely back and forth across the border bringing weapons large and small to shoot at big targets like C-130's.  To make the VC easier to spot, the USAF defoliated the nearby jungle with Agent Orange--note the dead trees just beyond the runway.

A couple of years earlier a C-130 was hit on departure, and crash landed at a nearby airfield.  Pat Hatch's story is hair-raising.

Katum's runway was shorter than most--3000' of red dirt treated with Peneprime to keep the dust down.  The soil there is called laterite and it is red because of the high concentration of iron.

katum

C-123

Combat Essential, February 21, 1971


Army helicopters operating out of there needed fuel, so we brought it to them in "bladder birds".  Occasionally we brought 2' diameter round bladders called "elephant balls", but usually we carried the fuel in two black lozenge-shaped bladders, each about 18' long.

The airplane's landing weight determined the length of its landing roll, which was quite limited at small fields like Katum.  Based on the field length we calculated our maximum rollout, and from that we determined how many tons of fuel we could bring in.

"Normal" short field landing criteria are different from "combat essential" landing criteria.  If your mission was high priority (combat essential), thinner safety margins were acceptable. 

Max gross weight for normal short field landings was calculated assuming 2 props in reverse and 2 in ground idle.  For combat essential missions we calculated the landing rollout assuming all 4 in reverse.  This increased the possible gross weight (and the possibility of going off the far end of the runway if something went wrong).

My nav comes on a little strong sometimes (his nickname is King Kong).  He would make a good AC--he is sharp but occasionally I have to remind him that he's the navigator and I'm the AC.

The frag order was incorrect when we were briefed for the bladder mission and the duty officer and I were straightening out our itinerary.  Meanwhile KK noticed that ours was the only Katum mission that was not classified as combat essential.  So he had the duty officer check with Hilda and get it changed to CE so we could carry in more fuel in our bladders.

Yes, the sortie was intended to be combat essential, but the navigator cannot set the aircraft's landing weight and rollout for short fields.
So KK and I had a little talk about who makes those decisions.  I think we understand each other a little better now.

Friendly Fire, February 22, 1971

Our last sortie to Katum (in the fish hook area by the Cambodian border) turned out to be kind of interesting.  On the first two sorties John Roohms was giving another pilot an initial SEA check.  Stace rode along on both to log some time to put him closer to upgrading from copilot to AC.  I rode out on the first shuttle just to scope out the situation.  After sitting out the second one I flew the third mission.
We dealt with friendly fire and hostile fire daily.  As we approached the field on that third flight we monitored the radio frequency for "Tailpipe Alpha".  Tailpipe is the call sign for the combat control team-- the first USAF guys into a remote airfield like Katum.  They coordinate airlift operations at the field, act as control tower where there is no tower, and aerial port where there is no aerial port.

Tailpipe Alpha reported that there were incoming rounds but no damage yet.  So we orbited nearby and talked with Alpha and Hilda (call sign for the airlift control center at Tan Son Nhut).  They told us that it was all clear and the runway was OK.  Meanwhile the good guys at several fire support bases nearby had cranked up their artillery and were shooting back.

One FSB was located at the approach end of the runway so the navigator talked with them on their FM frequency and got them to hold their fire so we could land.  I was on short final approach when I saw puffs of white smoke coming up from the FSB!  Somebody down there hadn't gotten the word and we were about to fly into their fire!  I dodged right and broke off the approach, then orbited nearby while the nav talked with them yet again.  Once they really halted their fire we landed uneventfully and firmly. We pumped out our fuel, flew on to Binh Thuy, then back to Tan Son Nhut.

navigation

Contents

Vietnam and Cambodia

Thailand

Taiwan (CCK)

Training

Appendix



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