First officer of an medium large transport descended below published intermediate approach altitude during transition for an ILS approach. Tower controller subsequently cleared reporter for a visual approach which relieved the crew of further crossing restrs.

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Attributes
ACN	467890
Time
Date	200003
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ewr.airport
State Reference	NJ
Altitude	msl bound lower : 2000 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ewr.tower
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 22l
Flight Phase	descent : approach descent : intermediate altitude
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 190 flight time total : 14000 flight time type : 700
ASRS Report	467890
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude altitude deviation : crossing restriction not met non adherence : published procedure other spatial deviation
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

New york approach cleared our air carrier flight for the ILS to runway 22L at ewr and handed us off to tower at 9 DME. I checked in with tower at 8.2 DME. The tower asked us if we wanted a visual approach to runway 29, with the wind 290 degrees at 20 KTS. The PF stated that he wanted runway 29 and I requested the visual to runway 29. Tower cleared us for the visual and pointed out traffic ahead, also circling for runway 29. As I looked down to xchk my instruments, I noticed that we were at 6 DME about 1/2 DOT low on the GS at about 2000 ft. There was a 2500 ft restr on the ILS at gimee intersection at 7.3 DME, which we may have busted, prior to being cleared for the visual. This may have occurred as we were distraction by the tower's offer for the visual, as we approached this fix. There was no hazard to safety noted by the crew.

Original NASA ASRS Text

Title: FO OF AN MLG DSNDED BELOW PUBLISHED INTERMEDIATE APCH ALT DURING TRANSITION FOR AN ILS APCH. TWR CTLR SUBSEQUENTLY CLRED RPTR FOR A VISUAL APCH WHICH RELIEVED THE CREW OF FURTHER XING RESTRS.

Narrative: NEW YORK APCH CLRED OUR ACR FLT FOR THE ILS TO RWY 22L AT EWR AND HANDED US OFF TO TWR AT 9 DME. I CHKED IN WITH TWR AT 8.2 DME. THE TWR ASKED US IF WE WANTED A VISUAL APCH TO RWY 29, WITH THE WIND 290 DEGS AT 20 KTS. THE PF STATED THAT HE WANTED RWY 29 AND I REQUESTED THE VISUAL TO RWY 29. TWR CLRED US FOR THE VISUAL AND POINTED OUT TFC AHEAD, ALSO CIRCLING FOR RWY 29. AS I LOOKED DOWN TO XCHK MY INSTS, I NOTICED THAT WE WERE AT 6 DME ABOUT 1/2 DOT LOW ON THE GS AT ABOUT 2000 FT. THERE WAS A 2500 FT RESTR ON THE ILS AT GIMEE INTXN AT 7.3 DME, WHICH WE MAY HAVE BUSTED, PRIOR TO BEING CLRED FOR THE VISUAL. THIS MAY HAVE OCCURRED AS WE WERE DISTR BY THE TWR'S OFFER FOR THE VISUAL, AS WE APCHED THIS FIX. THERE WAS NO HAZARD TO SAFETY NOTED BY THE CREW.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.