Above & Beyond: Mission Unaccomplished
Memorable flights, and other adventures.
- By William Campenni
- Air & Space magazine, May 2008
David Clark
On a January night in 1969, I strapped into the right seat of a Pennsylvania Air National Guard Boeing C-97 at Travis Air Force Base in California for the next leg of a two-week odyssey from our home at Willow Grove Naval Air Station to Cam Rahn Bay in South Vietnam. We went through our checklists for a late-night takeoff for the next stopover, at Hickam Air Force Base in Hawaii. I was a new second lieutenant, six months out of pilot training, still mastering where all the circuit breakers were and remembering to check that the floor hatch to the lower deck was closed before I stepped into the cargo area.
The C-97 was a derivative of the B-29 bomber, with the fuselage sliced in half longitudinally and a fatter second deck added on top to make the aircraft more suitable for cargo than for bombs. It had the same engines and wings, and a glass greenhouse for the flight deck, which made for great sightseeing or a 100-degree oven when transiting the tropics at low altitude. Its propellers were driven by four 3,500-horsepower Pratt & Whitney R-4360 Wasp engines that were the culmination of piston-engine technology before jet engines appeared. With engines being driven to their limits, they failed much more frequently than today's jets. As a result, crews unaffectionately called the C-97 the Boeing Tri-motor.
For missions across the ocean to short, hot atoll runways, the norm was 195 mph cruise at 10,000 feet. The range, about 2,760 miles, was typical for four-engine prop jobs of the era, and complemented the Almighty's placement of those infinitely small coral islands across the Pacific. Our leg to Honolulu, 2,415 miles, remains the longest open-water stretch in aviation. In the middle you are more than 1,150 miles from the nearest speck of dirt.
Soon we were well out to sea, sharing our Pacific skies with a billion stars. At 8,000 feet we listened enviously to the position reports of the C-141s and C-135s far above us, doing in four hours what would take us more than 10. As we approached the equal time point—the halfway mark—which in those days actually was marked on the sea by a Coast Guard ship, Ocean Station November, one of the 28 cylinders in the number-four right outboard engine blew a crack in its head. This required immediate feathering of the propeller—turning the blades to an angle that minimized drag—before the oil pressure in the amazingly complex prop dome dropped too low to drive the prop to the feather position. If you failed to do this, the prop would windmill at increasingly higher revolutions per minute until the shaft sheared off, flinging the prop free and too often in the direction of the fuselage, a scenario that had already brought a few C-97s down.
We feathered the prop and finished the checklist. No sooner were our emergency procedures completed than the loadmaster came forward and told us sparks and flames were coming out of the nacelle of the left inboard engine. Later investigation would show that the starter shaft had sheared—not at the designed shear point, near the drive gear, but at the far end of the shaft. Now we had a shaft rod flailing around in the cowling, threatening to gouge the cowling innards clean. We cut that engine to idle so that the remnant would be sheared off or would no longer scour the innards, but the engine was no longer putting out power. We were now a Boeing Bi-motor. We were headed back to San Francisco, and we were at the one place in the world most remote from any land.
Just flying the airplane became an ordeal. With our load we couldn't hold altitude on the remaining two engines, even at full throttle. The asymmetry of thrust made full rudder trim inadequate, so one of us had to hold constant and considerable pressure on the rudder to keep us straight. It was only when we got down to 1,000 feet that we were able to hold altitude with full bore on the throttles, but it was not likely that we could keep those engines and props going at takeoff power for the four-plus hours back to landfall. A night swim in the north Pacific looked like a sure thing.
Ocean Station November, normally a quick fix and a position report, became the communication lifeline for our Mayday call and request for a launch of a Coast Guard rescue HC-130 Hercules out of San Francisco. As we struggled eastward, they would head west to intercept us and prepare for our ditching.
Every moment was consumed by some pre-ditching preparation: raft breakouts, crew duty assignments, navigator position updates (this was pre-GPS—navigators did it the Polynesian way, with the stars). Amazingly, the overworked props kept turning, and after a couple of hours the fuel burnoff allowed us to throttle back a wee bit. As the right-seater, I spent a lot of time setting up for the water egress from the right side of the airplane and copying the elaborate ditching brief from the Coast Guard escort, who was now in UHF radio range. I was fascinated by the catalogue of services the Coast Guard was going to provide: data on swell direction, sea state, winds, and wave heights; laying down a flare trail on the sea for a pseudo-runway; dropping a raft for us.
Comments (9)
I read this article in the magazine, and just enjoyed it again online. Although I never flew the C-97 or KC-97, I had KC-135 colleagues who did, and I found it to be VERY entertaining. I was surprised that the author didn't mention the furious rate at which the '97 consumed oil in its engines, and how often the crews had to transfer oil from a storage tank to those engines. My former '97 buddies used to kid about how the KC-97 used as much oil, as it did gasoline. Anyway, thanks for a terrific story!!
Posted by Duke Woodhull on March 30,2008 | 03:13 PM
I was a crew member on a KC-97 during the Cold War and we left Alabama to refuel B-47 bombers over Europe on their return from the Russian border.
I was mainly a ground crewmember,but got to fly often because I had been a crewchief of two different C-119s in Ashia,Japan during the Korean war as well as French Indochina.
We dropped the 187th.in Korea where I met Gen.Westmoreland.
I came back from England in a C-124 that had an engine catch on fire which forced us to lay over in Bermuda.
I joined in 1951 and discharged in 1955.
We had one mishap on a KC-97 when the right landing gear
gave way after landing and almost stopped,other than that,I
found the KC-97 worthy aircraft to be in,although my C-119
was the only one to go beyond the time for engine change.
This entry was made on May 22,2008.
Posted by Regulo Vasquez on May 22,2008 | 10:05 PM
My father (William M. Johnson, Jr, then a Lt. but retired
as a Lt. Col) often flew the KC-97 that was mentioned as having ditched near the Azores and floated for ten days afterward.
But he wasn't flying it on THAT mission. He told me that the
Air Force had attempted to tow that plane back to land but
it started to come apart, and was then scuttled so as to
keep it from being a sea navigational hazard. If anyone
should ever visit that plane on the bottom of the ocean and
find a Heathkit hi-fi in the cargo hold, it belongs to my
father and I'd like it returned. :) But his souvenir
camel saddles were observed to be floating away from the
aircraft after it was scuttled.
Posted by Chris Johnson on January 15,2009 | 04:31 PM
Looking for the complete story of the Atlantic KC-97 ditching. We often emptied the 52 gal central oil tank.
Thanks, RT
Posted by Ron Thompson 97th ARs on January 24,2009 | 03:08 AM
As my father told the story, the cause of the ditching was multiple engine failures, one after the other, most probable cause being contaminated fuel. The ditching was uneventful
once you get past the fact that it was a ditching, and there were no injuries among the crew.
Posted by Chris Johnson on February 17,2009 | 02:36 PM
The 97 propeller had its own intergal hydraulic system and feathering pump which made engine oil pressure irelevant.
Posted by Paul Hunter on September 7,2009 | 08:46 AM
I have often wondered if others remembered the ditching of the KC-97 near the Azores..My father was also on that flight. I have a large scrapbook of the articles that were written about it from many newspapers..Fortunately all aboard were safe..alto there were some injuries..yes there are pictures of camel saddles floating about..I do have some incredible pictures ...the crew was picked up by a Norwegian tanker.
Posted by Shari Abraham Benoit on December 28,2009 | 04:48 PM
I was an aircraft mechanic on the B-377 Stratocruiser, the civilan version of the C-97. It used so much oil, the joke went, when the plane landed and the service truck came by they asked to check the gas and fill the oil.
Posted by Berge on August 29,2010 | 11:14 PM
I was a crew chief on a KC-97 at March AFB from 1958-1962. Just an added note to the oil consumption problems. As previously mentioned, there was a 52 gal tank below the flight engeneer's position and oil could be pumped to any of the 4 engines. When we flew from March AFB to Hawaii, Guam and Japan, we would strap a 55 gal barrel by the ladder and APU in the lower forward cabin. This gave us the ability to hand pump 55 gal of oil into the 52 gal tank as needed. And that's a lot of oil!
Ed Paxton-
Posted by Ed Paxton on December 9,2010 | 09:38 AM