JetLite flight forced to make three landing attempts due to faulty ILS at Delhi airport

A Jetlite Boeing 737-800, registration VT-SJH performing flight S2-320 from Kolkata to New Delhi with 140 persons on board, was forced to make three landing attempts due to weather and a fault Instrument Landing System at New Delhi's Indira Gandhi International Airport.

The flight was on approach to New Delhi's runway 29, when a thunderstorm went into its final approach and landing path. The crew aborted the landing and requested for a different runway.

Air Traffic Control (ATC) vectored the aircraft for an ILS approach to runway 11 (the opposite side of runway 29). However, when the crew attempted to intercept the ILS localizer on runway 11, the ILS was found to be malfunctioning.

Air Traffic Control then instructed the pilots to swing over to runway 10. However, while the airplane manoeuvred to align with runway 10, Air Traffic Control reported that the ILS on runway 11 was now working.

The airplane finally landed on runway 11 on the third approach 20 minutes after the first approach attempt.

JetLite refused to answer my queries if they have lodged any complaint or protest about the malfunctions with either the Airports Authority of India (AAI) whose controllers operate the ATC or with the airport operator Delhi International Airport Limited (DIAL). They issued me this statement

"Due to weather detected on the aircraft weather radar S2 320 requested a runway change from R/W 29 to R/W 11. While the aircraft was being vectored for an approach to R/W 11, non-availability of the ILS (Instrument Landing System) of R/W 11 necessitated the change of the approach to R/W10. However, during the approach to R/W 10 a downgrade of the R/W10 ILS and subsequent availability of R/W 11 ILS resulted in the approach and landing being made on R/W 11. The changes in the approaches did not result in any go-arounds."

METARS:
VIDP 291300Z 00000KT 3500 HZ SCT035 FEW040CB BKN090 23/19 Q1010 TEMPO TSRA
VIDP 291230Z 18005KT 3500 HZ SCT035 FEW040CB BKN100 23/19 Q1009 TEMPO TSRA
VIDP 291200Z 18006KT 3500 -DZ SCT035 FEW040CB BKN100 23/18 Q1009 TEMPO TSRA
VIDP 291100Z 18005KT 3500 HZ SCT035 FEW040CB BKN100 26/17 Q1009 NOSIG
VIDP 291030Z 20005KT 3500 HZ SCT035 FEW040CB BKN100 26/17 Q1009 NOSIG
VIDP 290930Z 31005KT 2800 TS SCT035 FEW040CB BKN100 27/17 Q1010 BECMG 3000
VIDP 290900Z 28003KT 2800 HZ SCT035 FEW040CB BKN100 28/17 Q1010 NOSIG
VIDP 290830Z 01005KT 2600 HZ FEW035 FEW040CB BKN100 28/17 Q1010 NOSIG
VIDP 290730Z 32005KT 2800 HZ FEW035 FEW040CB BKN100 27/18 Q1010 BECMG 3000
VIDP 290700Z 34005KT 2800 HZ FEW035 FEW040CB BKN100 27/18 Q1011 NOSIG

Thanks to Simon Hradecky at Aviation Herald for the tip.