Dave Eagles refers to the display in his book "Testing Tornado"
After the clean display of 1976 it was clear that they needed to demonstrate with a weapons load to show the aircraft in its normal environment. He writes
In September1978 I took P03 to Farnborough and this time we carried out a full show with eight 1000lb bomb shapes under fuselage and two 1500 litre fuel tanks and two ECM pods under the wings