By Mike M. Ahlers, CNN
April 7, 2014
(CNN) — After weeks of fruitless searching for the missing Malaysia Airlines plane, it sounds like a promising sign.
When a Chinese patrol ship picked up two pulses in the southern Indian Ocean, the head of the Australian agency coordinating search efforts called it “an important and encouraging lead.”
Investigators hope the audio signals are locator beacons from the plane’s data recorders, but they’re not sure yet.
Is it the discovery we’ve all been waiting for? Could those be Malaysia Airlines Flight 370’s pingers?
Here are four reasons to believe and six reasons to doubt:
REASONS TO BELIEVE
1) The frequency doesn’t occur in nature.
The Chinese Haixun 01 patrol ship detected pulses at a frequency of 37.5 kHz, the Chinese state-run Xinhua news agency reported. That’s the same frequency of black box pingers — and that frequency is no accident. The pingers were designed to have that frequency because it does not occur in nature.
2) There were two separate events.
The Haixun 01 reported two pulses within 2 kilometers (1.25 miles) of each other. Air Chief Marshal Angus Houston, head of the Joint Agency Coordination Center, described them as “fleeting, fleeting acoustic events.” One was described as being 90 seconds long; no time was given for the other, but it was evidently shorter. Continue reading “MH370: Is it the pinger? 4 reasons to believe; 6 reasons to doubt”