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Flight crew of a DC9 failed to maintain assigned speed until cleared for the approach as requested by ATC. Even though the flight crew were distracted with anti- and deicing problems, the PF still needs to assure the aircraft complies with ATC instructions!
| Attributes | |
| ACN | 360380 |
| Time | |
| Date | 199702 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : pit |
| State Reference | PA |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : pit |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 8350 flight time type : 1500 |
| ASRS Report | 360380 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance other anomaly |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
En route to pit, captain flying the ILS to runway 28R, we were assigned a speed of 170 KTS. During the approach, while still outside the OM our speed slowed to about 140 KTS, because we were distracted by erroneous GS indications on the captain's altitude indicator as the GS was becoming active. Contributing factors: I had mmj VOR tuned in navigation #2 for the DME. When the captain noticed the erroneous indications, he requested that I tune and identify the ILS runway 28R on navigation #2. While tuning and identing the aircraft slowed. Secondly, the aircraft slowed quite rapidly because we were in heavy icing conditions. Thirdly, while en route we had had several distractions, from holding to several problems with the ice protection system, we were also having a company line check. We were also kept high on base and had a quick turn to final and needed to slow to get down on the GS. I don't believe that our slowing down caused ATC any problems, but they did inquire. The check pilot doing the line check mentioned to us, after the flight, that while they did give us a speed, they never gave us a 'maintain 170 KTS until.'
Original NASA ASRS Text
Title: FLC OF A DC9 FAILED TO MAINTAIN ASSIGNED SPD UNTIL CLRED FOR THE APCH AS REQUESTED BY ATC. EVEN THOUGH THE FLC WERE DISTRACTED WITH ANTI- AND DEICING PROBS, THE PF STILL NEEDS TO ASSURE THE ACFT COMPLIES WITH ATC INSTRUCTIONS!
Narrative: ENRTE TO PIT, CAPT FLYING THE ILS TO RWY 28R, WE WERE ASSIGNED A SPD OF 170 KTS. DURING THE APCH, WHILE STILL OUTSIDE THE OM OUR SPD SLOWED TO ABOUT 140 KTS, BECAUSE WE WERE DISTRACTED BY ERRONEOUS GS INDICATIONS ON THE CAPT'S ALT INDICATOR AS THE GS WAS BECOMING ACTIVE. CONTRIBUTING FACTORS: I HAD MMJ VOR TUNED IN NAV #2 FOR THE DME. WHEN THE CAPT NOTICED THE ERRONEOUS INDICATIONS, HE REQUESTED THAT I TUNE AND IDENT THE ILS RWY 28R ON NAV #2. WHILE TUNING AND IDENTING THE ACFT SLOWED. SECONDLY, THE ACFT SLOWED QUITE RAPIDLY BECAUSE WE WERE IN HVY ICING CONDITIONS. THIRDLY, WHILE ENRTE WE HAD HAD SEVERAL DISTRACTIONS, FROM HOLDING TO SEVERAL PROBS WITH THE ICE PROTECTION SYS, WE WERE ALSO HAVING A COMPANY LINE CHK. WE WERE ALSO KEPT HIGH ON BASE AND HAD A QUICK TURN TO FINAL AND NEEDED TO SLOW TO GET DOWN ON THE GS. I DON'T BELIEVE THAT OUR SLOWING DOWN CAUSED ATC ANY PROBS, BUT THEY DID INQUIRE. THE CHK PLT DOING THE LINE CHK MENTIONED TO US, AFTER THE FLT, THAT WHILE THEY DID GIVE US A SPD, THEY NEVER GAVE US A 'MAINTAIN 170 KTS UNTIL.'
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.