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1997年11月18日,民航西南空管局航管站的东芝二次雷达系统信号处理流程中的关键部件——录取器 B 通道 DIF3印刷电路板发生故障。如不能及时修复,随时可能造成二次雷达全系统的瘫痪。若向日本紧急订货,得等三至六个月后才能到货,且货款约4.5万元。按照惯例,他们只需等订购的新板件到货后换上即可,既简单、又方便。但航管站的同志们急安全
On November 18, 1997, the key component of Toshiba’s secondary radar system signal processing at the ATC Station of Southwest Air Traffic Control Center - failed to receive the B-channel DIF3 printed circuit board of the aircraft. If not promptly repaired, at any time may result in paralysis of the second radar system-wide. If the emergency order to Japan, have to wait three to six months to arrive, and the purchase price of about 45,000 yuan. By convention, they just have to wait for the new plate to arrive after the arrival, which is both simple and convenient. However, comrades in navigation station are in urgent need of safety