def deactivateAaPdpContextRequest():
    """DEACTIVATE AA PDP CONTEXT REQUEST Section 9.5.13"""
    a = TpPd(pd=0x8)
    b = MessageType(mesType=0x53)  # 01010011
    c = AaDeactivationCauseAndSpareHalfOctets()
    packet = a / b / c
    return packet