Crime Solvers Central
Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP68555) and 4 other sources
Robert Douglas Sparks, a 45-year-old private pilot and retired Air Force officer, went missing on November 19, 1972, after departing from McAllen, Texas. He had been hired by a man named Lonnie D. Shaw to fly around the lower Rio Grande Valley for a photography trip. The two left McAllen in a 1970 Piper Cherokee aircraft that Sparks had rented for the flight. At around 1:50 PM, Sparks contacted the FAA, stating they were en route to Tampico, Mexico, even though he lacked the required papers to enter Mexico. Sparks communicated again shortly after, but all radio contact ceased thereafter.

The circumstances surrounding the flight raise concerns that Sparks may have been under duress, as the Tampico destination was unexpected. Furthermore, Sparks had a scheduled flight instruction later that day, which he never canceled—something he was known to be responsible about. Neither Sparks, Shaw, nor the plane were ever seen again. Shaw had a history of mental health issues and had been in and out of mental institutions. The disappearance left behind many unanswered questions, and Sparks' family has been seeking closure for decades.

The case remains unsolved, and authorities, including the FBI and local Texas law enforcement, continue to search for answers. His family and investigators urge anyone with information to come forward.

Last Seen: Nov 19, 1972

Possible Unidentified Matches (4)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

79%Possible
John Doe — Mcallen, Texas
UP13121 • Found Sep 5, 2014
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Sex ✓Male
Age 100%Est. 50–55 vs 45 when missing
Race 100%White
Location 100%1 mi away, same county
TimingFound 42 years after last seen
Height 84%5'8" vs 5'10"
Weight 100%160 lb vs 168 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
77%Possible
John Doe — Texas
UP3287 • Found Oct 5, 2002
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Sex ✓Male
Age 73%Est. 37–42 vs 45 when missing
Race 100%White
Location 98%18 mi away, same county
TimingFound 30 years after last seen
Height 100%5'10" vs 5'10"
Weight 100%172 lb vs 168 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
76%Possible
John Doe — Laredo, Texas
UP5048 • Found Sep 25, 2007
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Sex ✓Male
Age 100%Est. 30–45 vs 45 when missing
Race 100%White
Location 74%106 mi away, same state
TimingFound 35 years after last seen
Height 100%5'10" vs 5'10"
Weight 100%180 lb vs 168 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
76%Possible
John Doe — Texas
UP9630 • Found Aug 13, 2002
View case
Sex ✓Male
Age 85%Est. 40–60 vs 45 when missing
Race 100%White
Location 87%57 mi away, same state
TimingFound 30 years after last seen
Height 100%5'9" vs 5'10"
Weight 100%153 lb vs 168 lb
Hair 100%Brown vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.