411A, I think this is the one you mean
Forget posted at 1024, 10/12/2002:
Saturday afternoon, 1978 or thereabouts. Seletar Airfield, Singapore. Sat on the patio of my old RAF bungalow with a cold one. Chatting with a friend when, from the far end of the runway (which we couldn’t see because of rising ground ) an ex Cathay Convair 880 starts to roll. Conversation ceases as 880's were well before noise was an issue. Noise gets louder, and louder, and louder, behind the rising ground. He should be airborne by now, and in sight. I start walking, and then running, towards the runway. Suddenly the noise ceases as the throttles are chopped. Noise starts again, but this time it's the tyres blowing. Run faster. Get to the top of the rise in time to see the aircraft run off the end and into the gravel. Run even faster. Nose leg has collapsed and aircraft shrouded in dust. Left forward door opens and slide pops out. Captain, dressed for the occasion in uniform jacket, rolls to the ground and sees me, wearing only a pair of shorts, heading in his direction. We meet and he looks at me. I'll never forget his instant explanation, which said it all. 'It wouldn't f---ing fly!'
Nor surprising. The empty aircraft was positioning to Paya Lebar, ten minutes away, for a trip to the middle east with oilies. It later turned out that some smart individual had loaded a huge drill bit, or something similar, in the forward hold. No way that it was going to fly. Mind you, if he had got it off the ground it's unlikely he could have kept it there, and the runway heading took you over a packed residential area. So all's well that ends well.
Aargh!