B767 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Weather / Turbulence
Flight Crew Became Reoriented; Flight Crew Returned To Clearance; Flight Crew Took Evasive Action
Aircraft; Human Factors; Weather
Aircraft level at 12;000 feet cleared for ILS 13L at SKBO close proximity to BOG VOR. Weather was clear with 30 miles plus visibility with visual contact with terrain at all times. We were configured flaps 15. Pilot Flying (PF) armed approach to follow Glideslope (GS) down. Autopilot was on. Next altitude on approach allows you to descend to 10;000 feet. Wind was very gusty at this phase of flight with light turbulence. Speed brake deployed to control airspeed for flap configuration. Aircraft pitched down after flight director bars. PF arrested pitch down but heard one short caution terrain audible warning. My head was down trying to tune left VHF radio to tower frequency. Looked up and out to see aircraft well clear of any terrain. Retracted speed brake after confirming airspeed under control. The glide path was now above us and reintercepted at approx. 11;300 feet lowest altitude noted was around 10;700 feet within approach criteria. Normal landing without any over speeds. No comments from Bogota approach control or tower. I would never rely on this NAVAID to bring me down in the weather. Actual glideslope should be close to the 12;000-foot crossing at BOG VOR. The feather starts at 10;000 further in the approach. Could have been interference on the ground.
[Report narrative contained no additional information].
B767 flight crew reported they received a GPWS terrain alert on approach into SKBO when the aircraft nosed over in thermals.