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MD88 on minks 1 STAR lga, cleared cross kerno intersection FL260 pilots discretion. EFIS map failed and descent was begun. When map restored crossed kerno FL285. Center advised no problem.
| Attributes | |
| ACN | 364758 |
| Time | |
| Date | 199703 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : dqo |
| State Reference | DE |
| Altitude | msl bound lower : 28500 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 4000 flight time type : 800 |
| ASRS Report | 364758 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 70 flight time total : 10000 flight time type : 600 |
| ASRS Report | 364765 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : crossing restriction not met non adherence : clearance non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On the minks 1 arrival into lga we were given clearance to cross kerno at FL260. Distance to kerno showed 38 NM so I didn't start down immediately. Captain tuned his VOR to dca (111.0), first officer tuned col (115.4) which is normal procedure. Moments later the EFIS map failed, FMC timed out, and the autoplt entered the basic mode. No dead reckoning was displayed on pfd. I re-entered FMS data and started a descent to FL260. Approaching FL260 the map display shifted and showed us almost on top of kerno intersection. We crossed kerno at FL285 and ZNY cleared us to cross somto at 13000 ft. We queried ZNY and they told us the high crossing was 'not a problem.' the FMC functioned normally for the remainder of the flight.
Original NASA ASRS Text
Title: MD88 ON MINKS 1 STAR LGA, CLRED CROSS KERNO INTXN FL260 PLTS DISCRETION. EFIS MAP FAILED AND DSCNT WAS BEGUN. WHEN MAP RESTORED CROSSED KERNO FL285. CTR ADVISED NO PROB.
Narrative: ON THE MINKS 1 ARR INTO LGA WE WERE GIVEN CLRNC TO CROSS KERNO AT FL260. DISTANCE TO KERNO SHOWED 38 NM SO I DIDN'T START DOWN IMMEDIATELY. CAPT TUNED HIS VOR TO DCA (111.0), FO TUNED COL (115.4) WHICH IS NORMAL PROC. MOMENTS LATER THE EFIS MAP FAILED, FMC TIMED OUT, AND THE AUTOPLT ENTERED THE BASIC MODE. NO DEAD RECKONING WAS DISPLAYED ON PFD. I RE-ENTERED FMS DATA AND STARTED A DSCNT TO FL260. APCHING FL260 THE MAP DISPLAY SHIFTED AND SHOWED US ALMOST ON TOP OF KERNO INTXN. WE CROSSED KERNO AT FL285 AND ZNY CLRED US TO CROSS SOMTO AT 13000 FT. WE QUERIED ZNY AND THEY TOLD US THE HIGH XING WAS 'NOT A PROB.' THE FMC FUNCTIONED NORMALLY FOR THE REMAINDER OF THE FLT.
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.