Citationjet (C525/C526) - CJ I / II / III / IV
Flight Crew Air Transport Pilot (ATP)
ATC Issue All Types; Aircraft Equipment Problem Less Severe; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Aircraft Equipment Problem Dissipated; Flight Crew Returned To Clearance
Aircraft; Human Factors
While being radar vectored for a night; IMC; ILS approach; ATC assigned an altitude. Pilot not flying read back 3;000. A few seconds beforehand the Left-Hand Wing Overheat annunciator illuminated and was being dealt with initially by the pilot flying. Pilot not flying reminded pilot flying to start descent to 3;000 FT. At 3;400 FT ATC advised that the assigned altitude was 4;000 FT. Pilot not flying responded 'correcting'. Quickly after [that] ATC issued a low altitude alert with the MVA of 3;400 FT. Pilot flying disconnected the autopilot to make for a quicker adjustment of aircraft pitch for the climb to 4;000 FT. Left-Hand Wing Overheat light extinguished and a normal ILS and landing were performed. The distraction of the wing overheat combined with an ATC hearback/readback error were the causing factors.
While being vectored for a instrument approach in IMC; a wing overheat caution light illuminated; at the same time ATC gave us an altitude clearance; I read back 3;000 FT but; during the descent to 3;000 FT; ATC called and gave us a low altitude alert with immediate instructions to climb to 4;000 FT; and we complied. The distraction of the wing overheat combined with an ATC hear back/read back error were the causing factors.
CE525 flight crew reports an altitude deviation causing a low altitude alert from ATC. The altitude assignment was misheard and readback incorrectly at the same time a wing overheat caution light illuminated.