Really? Where and when?
A friend of mine, a test/training pilot for Boeing for nearly 15 years (he's retired) at the time didn't buy into the fuel tank explosion theory. He said there was no precedent that he was aware of ... that was back in 1996/97.
737 in the Philippines in 1990, and Thailand in 2001, both suffered center fuel tank explosions.
The TWA 800 nutters conveniently ignore them, of course. Interestingly they were both in hot climates, and TWA 800 was on a hot day.
Philippines and Thailand. Two countries with more than their share of Islamist issues. The Thai Air flight was supposed to be carrying the Prime Minister. The Philippine Air flight explosion was very similar to the Ramzi Yousef trial run for Bojinka that killed a Japanese businessman sitting near the center tank.
Both investigations were assisted by the NTSB. The same agency that manufactured the center fuel tank theory for TWA 800 (despite the ten rows that were covered in PETN).
Take Strategerist with a grain of salt. He’s a formerly banned disinformation agent who used to go by the handle JohnHK. He has a soft spot for Islamists and ChiComs.